[alsa-devel] Hercules P32 DJ: severe sound distortion during MIDI transfers

20 Mar 2019


      Hello.
I am hitting a very serious bug (ALSA kernel driver or ALSA library)
when using the Hercules P32 DJ audio interface.
The sound is severely distorted during MIDI transfers.
To reproduce:
- start playing something in a first console:
console1# AUDIODEV=hw:2,0 play audio.wav
- the audio plays fine
- now start "amidi" in a second console while the above track is still
playing
console2# amidi -p hw:2,0,0 -d
- the sound is now severely distorted (basically noise, with some hard-
to-distinguish features resembling the original track) until "amidi" is
interrupted !
Kernel versions tested: from 4.12 up to 5.0.2 (latest).
NOTES: Always reproducible. Same device is working fine on Windows.
The output from alsa-info.sh and lsusb -v follows.
upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.64
!!################################
!!Script ran on: Wed Mar 20 20:44:36 UTC 2019
!!Linux Distribution
!!------------------
!!DMI Information
!!---------------
Manufacturer:      Acer
Product Name:      Aspire 5745G
Product Version:   V1.19
Firmware Version:  V1.19
Board Vendor:      Acer
Board Name:        JV51_CP
!!ACPI Device Status Information
!!---------------
/sys/bus/acpi/devices/PNP0103:00/status 	 15
/sys/bus/acpi/devices/PNP0C0A:00/status 	 31
/sys/bus/acpi/devices/PNP0C0F:00/status 	 9
/sys/bus/acpi/devices/PNP0C0F:01/status 	 9
/sys/bus/acpi/devices/PNP0C0F:02/status 	 9
/sys/bus/acpi/devices/PNP0C0F:03/status 	 9
/sys/bus/acpi/devices/PNP0C0F:04/status 	 9
/sys/bus/acpi/devices/PNP0C0F:05/status 	 9
/sys/bus/acpi/devices/PNP0C0F:06/status 	 9
/sys/bus/acpi/devices/PNP0C0F:07/status 	 9
!!Kernel Information
!!------------------
Kernel release:    5.0.2
Operating System:  GNU/Linux
Architecture:      x86_64
Processor:         unknown
SMP Enabled:       Yes
!!ALSA Version
!!------------
Driver version:     k5.0.2
Library version:    1.1.8
Utilities version:  1.1.8
!!Loaded ALSA modules
!!-------------------
snd_hda_intel
snd_hda_intel
snd_usb_audio
!!Sound Servers on this system
!!----------------------------
Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - No
Jack:
      Installed - Yes (/usr/bin/jackd)
      Running - No
!!Soundcards recognised by ALSA
!!-----------------------------
0 [MID            ]: HDA-Intel - HDA Intel MID
                      HDA Intel MID at 0xb7100000 irq 27
 1 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xb3000000 irq 16
 2 [DJ             ]: USB-Audio - Hercules P32 DJ
                      Guillemot Corporation Hercules P32 DJ at usb-
0000:00:1d.0-1.4, full speed
!!PCI Soundcards installed in the system
!!--------------------------------------
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset
High Definition Audio (rev 05)
01:00.1 Audio device: NVIDIA Corporation GT216 HDMI Audio Controller
(rev a1)
!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------
00:1b.0 0403: 8086:3b56 (rev 05)
    Subsystem: 1025:035b
--
01:00.1 0403: 10de:0be2 (rev a1)
    Subsystem: 1025:035a
!!Loaded sound module options
!!---------------------------
!!Module: snd_hda_intel
    align_buffer_size : -1
    bdl_pos_adj : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    beep_mode :
N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N
    enable :
Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
    enable_msi : -1
    id :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    jackpoll_ms :
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    model :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    patch :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    pm_blacklist : Y
    position_fix : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    power_save : 0
    power_save_controller : Y
    probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    probe_only :
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    single_cmd : -1
    snoop : -1
!!Module: snd_hda_intel
    align_buffer_size : -1
    bdl_pos_adj : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    beep_mode :
N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N
    enable :
Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
    enable_msi : -1
    id :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    jackpoll_ms :
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    model :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    patch :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    pm_blacklist : Y
    position_fix : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    power_save : 0
    power_save_controller : Y
    probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    probe_only :
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    single_cmd : -1
    snoop : -1
!!Module: snd_usb_audio
    autoclock : Y
    device_setup :
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    enable :
Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
    id :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    ignore_ctl_error : N
    index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    pid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
    quirk_alias :
(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(
null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(n
ull),(null),(null),(null),(null),(null),(null),(null),(null),(null),(nu
ll),(null)
    use_vmalloc : Y
    vid : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-
1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
!!HDA-Intel Codec information
!!---------------------------
--startcollapse--
Codec: Realtek ALC269VB
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0269
Subsystem Id: 0x1025035b
Revision Id: 0x100100
No Modem Function Group found
Default PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D1 D2 D3 CLKSTOP EPSS
  Power: setting=D0, actual=D0
GPIO: io=2, o=0, i=0, unsolicited=1, wake=0
  IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x02 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Control: name="Headphone Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Device: name="ALC269VB Analog", type="Audio", device=0
  Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
  Amp-Out vals:  [0x00 0x00]
  Converter: stream=5, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x03 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Control: name="Speaker Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
  Amp-Out vals:  [0x51 0x51]
  Converter: stream=5, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x04 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x05 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x06 [Audio Output] wcaps 0x211: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Control: name="IEC958 Default PCM Playback Switch", index=0, device=0
  Device: name="ALC269VB Digital", type="SPDIF", device=1
  Converter: stream=5, channel=0
  Digital:
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x5e0]: 44100 48000 88200 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x07 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x08 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Amp-In caps: ofs=0x0b, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals:  [0x8b 0x8b]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Connection: 1
     0x23
Node 0x09 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Control: name="Capture Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Capture Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Device: name="ALC269VB Analog", type="Audio", device=0
  Amp-In caps: ofs=0x0b, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals:  [0x00 0x00]
  Converter: stream=1, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Connection: 1
     0x22
Node 0x0a [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Beep Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=4, ofs=0
  Control: name="Beep Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=4, ofs=0
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals:  [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80
0x80]
  Connection: 5
     0x18 0x19 0x1a 0x1b 0x1d
Node 0x0c [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00 0x00] [0x80 0x80]
  Connection: 2
     0x02 0x0b
Node 0x0d [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00 0x00] [0x80 0x80]
  Connection: 2
     0x03 0x0b
Node 0x0e [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0f [Audio Mixer] wcaps 0x20010a: Mono Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x00] [0x80]
  Connection: 2
     0x02 0x0b
Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x11 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x12 [Pin Complex] wcaps 0x40000b: Stereo Amp-In
  Control: name="Internal Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00000020: IN
  Pin Default 0x99a30930: [Fixed] Mic at Int ATAPI
    Conn = ATAPI, Color = Unknown
    DefAssociation = 0x3, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
Node 0x13 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x14 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Control: name="Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x00010014: OUT EAPD Detect
  EAPD 0x2: EAPD
  Pin Default 0x99130110: [Fixed] Speaker at Int ATAPI
    Conn = ATAPI, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Connection: 2
     0x0c 0x0d*
Node 0x15 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x16 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x17 [Pin Complex] wcaps 0x40010c: Mono Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80]
  Pincap 0x00000010: OUT
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x00:
  Connection: 1
     0x0f
Node 0x18 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x00001734: IN OUT Detect
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x03a19840: [Jack] Mic at Ext Left
    Conn = 1/8, Color = Pink
    DefAssociation = 0x4, Sequence = 0x0
  Pin-ctls: 0x24: IN VREF_80
  Unsolicited: tag=02, enabled=1
  Connection: 1
     0x0d
Node 0x19 [Pin Complex] wcaps 0x40008b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Pincap 0x00001724: IN Detect
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN VREF_HIZ
  Unsolicited: tag=00, enabled=0
Node 0x1a [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x0000003c: IN OUT HP Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
  Unsolicited: tag=00, enabled=0
  Connection: 2
     0x0c* 0x0d
Node 0x1b [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
  Amp-In vals:  [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x00000034: IN OUT Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
  Unsolicited: tag=00, enabled=0
  Connection: 2
     0x0c* 0x0d
Node 0x1c [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x1d [Pin Complex] wcaps 0x400000: Mono
  Pincap 0x00000020: IN
  Pin Default 0x4017992d: [N/A] Speaker at Ext N/A
    Conn = Analog, Color = Pink
    DefAssociation = 0x2, Sequence = 0xd
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
Node 0x1e [Pin Complex] wcaps 0x400381: Stereo Digital
  Pincap 0x00000014: OUT Detect
  Pin Default 0x03451120: [Jack] SPDIF Out at Ext Left
    Conn = Optical, Color = Black
    DefAssociation = 0x2, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x06
Node 0x1f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono
  Processing caps: benign=0, ncoeff=25
Node 0x21 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Control: name="Headphone Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x0000001c: OUT HP Detect
  Pin Default 0x0321101f: [Jack] HP Out at Ext Left
    Conn = 1/8, Color = Black
    DefAssociation = 0x1, Sequence = 0xf
  Pin-ctls: 0xc0: OUT HP
  Unsolicited: tag=01, enabled=1
  Connection: 2
     0x0c* 0x0d
Node 0x22 [Audio Selector] wcaps 0x30010b: Stereo Amp-In
  Amp-In caps: N/A
  Amp-In vals:  [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00
0x00] [0x00 0x00] [0x00 0x00]
  Connection: 7
     0x18 0x19 0x1a 0x1b 0x1d 0x0b 0x12*
Node 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals:  [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80
0x80] [0x80 0x80]
  Connection: 6
     0x18 0x19 0x1a 0x1b 0x1d 0x0b
Codec: Nvidia Generic
Address: 0
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x10de000a
Subsystem Id: 0x10de0101
Revision Id: 0x100100
No Modem Function Group found
Default PCM:
    rates [0x0]:
    bits [0x0]:
    formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D1 D2 D3
  Power: setting=D0, actual=D0
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x04 [Audio Output] wcaps 0x72b1: 8-Channels Digital Stripe CP
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Device: name="Generic Digital", type="HDMI", device=3
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0xe]: 16 20 24
    formats [0x5]: PCM AC3
  Unsolicited: tag=00, enabled=0
Node 0x05 [Pin Complex] wcaps 0x407381: 8-Channels Digital CP
  Pincap 0x09000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x04
Codec: Nvidia Generic
Address: 1
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x10de000a
Subsystem Id: 0x10de0101
Revision Id: 0x100100
No Modem Function Group found
Default PCM:
    rates [0x0]:
    bits [0x0]:
    formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D1 D2 D3
  Power: setting=D0, actual=D0
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x04 [Audio Output] wcaps 0x72b1: 8-Channels Digital Stripe CP
  Control: name="IEC958 Playback Con Mask", index=1, device=0
  Control: name="IEC958 Playback Pro Mask", index=1, device=0
  Control: name="IEC958 Playback Default", index=1, device=0
  Control: name="IEC958 Playback Switch", index=1, device=0
  Device: name="Generic Digital", type="HDMI", device=7
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0xe]: 16 20 24
    formats [0x5]: PCM AC3
  Unsolicited: tag=00, enabled=0
Node 0x05 [Pin Complex] wcaps 0x407381: 8-Channels Digital CP
  Pincap 0x09000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x04
Codec: Nvidia Generic
Address: 2
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x10de000a
Subsystem Id: 0x10de0101
Revision Id: 0x100100
No Modem Function Group found
Default PCM:
    rates [0x0]:
    bits [0x0]:
    formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D1 D2 D3
  Power: setting=D0, actual=D0
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x04 [Audio Output] wcaps 0x72b1: 8-Channels Digital Stripe CP
  Control: name="IEC958 Playback Con Mask", index=2, device=0
  Control: name="IEC958 Playback Pro Mask", index=2, device=0
  Control: name="IEC958 Playback Default", index=2, device=0
  Control: name="IEC958 Playback Switch", index=2, device=0
  Device: name="Generic Digital", type="HDMI", device=8
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0xe]: 16 20 24
    formats [0x5]: PCM AC3
  Unsolicited: tag=00, enabled=0
Node 0x05 [Pin Complex] wcaps 0x407381: 8-Channels Digital CP
  Pincap 0x09000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x04
Codec: Nvidia Generic
Address: 3
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x10de000a
Subsystem Id: 0x10de0101
Revision Id: 0x100100
No Modem Function Group found
Default PCM:
    rates [0x0]:
    bits [0x0]:
    formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D1 D2 D3
  Power: setting=D0, actual=D0
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x04 [Audio Output] wcaps 0x72b1: 8-Channels Digital Stripe CP
  Control: name="IEC958 Playback Con Mask", index=3, device=0
  Control: name="IEC958 Playback Pro Mask", index=3, device=0
  Control: name="IEC958 Playback Default", index=3, device=0
  Control: name="IEC958 Playback Switch", index=3, device=0
  Device: name="Generic Digital", type="HDMI", device=9
  Converter: stream=5, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0xe]: 16 20 24
    formats [0x5]: PCM AC3
  Unsolicited: tag=00, enabled=0
Node 0x05 [Pin Complex] wcaps 0x407381: 8-Channels Digital CP
  Pincap 0x09000094: OUT Detect HBR HDMI DP
  Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x04
--endcollapse--
!!USB Mixer information
!!---------------------
--startcollapse--
USB Mixer: usb_id=0x06f8b121, ctrlif=0, ctlerr=0
Card: Guillemot Corporation Hercules P32 DJ at usb-0000:00:1d.0-1.4,
full speed
  Unit: 2
    Control: name="PCM Playback Volume", index=0
    Info: id=2, control=2, cmask=0xf, channels=4, type="S16"
    Volume: min=-25600, max=0, dBmin=-10000, dBmax=0
  Unit: 2
    Control: name="PCM Playback Switch", index=0
    Info: id=2, control=1, cmask=0xf, channels=4, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
--endcollapse--
!!ALSA Device nodes
!!-----------------
crw-rw----. 1 root audio 116,  6 Mar 20 18:15 /dev/snd/controlC0
crw-rw----. 1 root audio 116, 15 Mar 20 18:15 /dev/snd/controlC1
crw-rw----. 1 root audio 116, 18 Mar 20 21:25 /dev/snd/controlC2
crw-rw----. 1 root audio 116,  5 Mar 20 18:15 /dev/snd/hwC0D0
crw-rw----. 1 root audio 116, 11 Mar 20 18:15 /dev/snd/hwC1D0
crw-rw----. 1 root audio 116, 12 Mar 20 18:15 /dev/snd/hwC1D1
crw-rw----. 1 root audio 116, 13 Mar 20 18:15 /dev/snd/hwC1D2
crw-rw----. 1 root audio 116, 14 Mar 20 18:15 /dev/snd/hwC1D3
crw-rw----. 1 root audio 116, 17 Mar 20 21:25 /dev/snd/midiC2D0
crw-rw----. 1 root audio 116,  3 Mar 20 19:58 /dev/snd/pcmC0D0c
crw-rw----. 1 root audio 116,  2 Mar 20 20:40 /dev/snd/pcmC0D0p
crw-rw----. 1 root audio 116,  4 Mar 20 19:58 /dev/snd/pcmC0D1p
crw-rw----. 1 root audio 116,  7 Mar 20 19:58 /dev/snd/pcmC1D3p
crw-rw----. 1 root audio 116,  8 Mar 20 19:58 /dev/snd/pcmC1D7p
crw-rw----. 1 root audio 116,  9 Mar 20 19:58 /dev/snd/pcmC1D8p
crw-rw----. 1 root audio 116, 10 Mar 20 19:58 /dev/snd/pcmC1D9p
crw-rw----. 1 root audio 116, 16 Mar 20 21:32 /dev/snd/pcmC2D0p
crw-rw----. 1 root audio 116,  1 Mar 20 17:19 /dev/snd/seq
crw-rw----. 1 root audio 116, 33 Mar 20 18:15 /dev/snd/timer
/dev/snd/by-id:
total 0
drwxr-xr-x. 2 root root  60 Mar 20 21:25 .
drwxr-xr-x. 4 root root 460 Mar 20 21:25 ..
lrwxrwxrwx. 1 root root  12 Mar 20 21:25 usb-
Guillemot_Corporation_Hercules_P32_DJ-00 -> ../controlC2
/dev/snd/by-path:
total 0
drwxr-xr-x. 2 root root 100 Mar 20 21:25 .
drwxr-xr-x. 4 root root 460 Mar 20 21:25 ..
lrwxrwxrwx. 1 root root  12 Mar 20 18:15 pci-0000:00:1b.0 ->
../controlC0
lrwxrwxrwx. 1 root root  12 Mar 20 21:25 pci-0000:00:1d.0-usb-0:1.4:1.0 
-> ../controlC2
lrwxrwxrwx. 1 root root  12 Mar 20 18:15 pci-0000:01:00.1 ->
../controlC1
!!Aplay/Arecord output
!!--------------------
APLAY
**** List of PLAYBACK Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: ALC269VB Analog [ALC269VB
Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 1: ALC269VB Digital [ALC269VB
Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: Generic Digital [Generic
Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: Generic Digital [Generic
Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: Generic Digital [Generic
Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: Generic Digital [Generic
Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: DJ [Hercules P32 DJ], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
ARECORD
**** List of CAPTURE Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: ALC269VB Analog [ALC269VB
Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
!!Amixer output
!!-------------
!!-------Mixer controls for card 0 [MID]
Card hw:0 'MID'/'HDA Intel MID at 0xb7100000 irq 27'
  Mixer name	: 'Realtek ALC269VB'
  Components	: 'HDA:10ec0269,1025035b,00100100'
  Controls      : 31
  Simple ctrls  : 14
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 87
  Mono: Playback 81 [93%] [-4.50dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 0 [0%] [-65.25dB] [off]
  Front Right: Playback 0 [0%] [-65.25dB] [off]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 87
  Mono:
  Front Left: Playback 87 [100%] [0.00dB] [on]
  Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 128 [50%] [-25.40dB]
  Front Right: Playback 128 [50%] [-25.40dB]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 0 [0%] [-16.50dB] [on]
  Front Right: Capture 0 [0%] [-16.50dB] [on]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Digital',0
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 60 [50%] [0.00dB]
  Front Right: Capture 60 [50%] [0.00dB]
Simple mixer control 'Internal Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
!!-------Mixer controls for card 1 [NVidia]
Card hw:1 'NVidia'/'HDA NVidia at 0xb3000000 irq 16'
  Mixer name	: 'Nvidia Generic'
  Components	: 'HDA:10de000a,10de0101,00100100'
  Controls      : 24
  Simple ctrls  : 4
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',2
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',3
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
!!-------Mixer controls for card 2 [DJ]
Card hw:2 'DJ'/'Guillemot Corporation Hercules P32 DJ at usb-
0000:00:1d.0-1.4, full speed'
  Mixer name	: 'USB Mixer'
  Components	: 'USB06f8:b121'
  Controls      : 4
  Simple ctrls  : 1
Simple mixer control 'PCM',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right - Rear Left - Rear Right
  Limits: Playback 0 - 400
  Mono:
  Front Left: Playback 320 [80%] [-20.00dB] [on]
  Front Right: Playback 320 [80%] [-20.00dB] [on]
  Rear Left: Playback 320 [80%] [-20.00dB] [on]
  Rear Right: Playback 320 [80%] [-20.00dB] [on]
!!Alsactl output
!!--------------
--startcollapse--
state.MID {
    control.1 {
    	iface MIXER
    	name 'Headphone Playback Volume'
    	value.0 0
    	value.1 0
    	comment {
    		access 'read write'
    		type INTEGER
    		count 2
    		range '0 - 87'
    		dbmin -6525
    		dbmax 0
    		dbvalue.0 -6525
    		dbvalue.1 -6525
    	}
    }
    control.2 {
    	iface MIXER
    	name 'Headphone Playback Switch'
    	value.0 false
    	value.1 false
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 2
    	}
    }
    control.3 {
    	iface MIXER
    	name 'Speaker Playback Volume'
    	value.0 87
    	value.1 87
    	comment {
    		access 'read write'
    		type INTEGER
    		count 2
    		range '0 - 87'
    		dbmin -6525
    		dbmax 0
    		dbvalue.0 0
    		dbvalue.1 0
    	}
    }
    control.4 {
    	iface MIXER
    	name 'Speaker Playback Switch'
    	value.0 true
    	value.1 true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 2
    	}
    }
    control.5 {
    	iface MIXER
    	name 'Loopback Mixing'
    	value Disabled
    	comment {
    		access 'read write'
    		type ENUMERATED
    		count 1
    		item.0 Disabled
    		item.1 Enabled
    	}
    }
    control.6 {
    	iface MIXER
    	name 'Mic Playback Volume'
    	value.0 0
    	value.1 0
    	comment {
    		access 'read write'
    		type INTEGER
    		count 2
    		range '0 - 31'
    		dbmin -3450
    		dbmax 1200
    		dbvalue.0 -3450
    		dbvalue.1 -3450
    	}
    }
    control.7 {
    	iface MIXER
    	name 'Mic Playback Switch'
    	value.0 false
    	value.1 false
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 2
    	}
    }
    control.8 {
    	iface MIXER
    	name 'Auto-Mute Mode'
    	value Enabled
    	comment {
    		access 'read write'
    		type ENUMERATED
    		count 1
    		item.0 Disabled
    		item.1 Enabled
    	}
    }
    control.9 {
    	iface MIXER
    	name 'Capture Volume'
    	value.0 0
    	value.1 0
    	comment {
    		access 'read write'
    		type INTEGER
    		count 2
    		range '0 - 31'
    		dbmin -1650
    		dbmax 3000
    		dbvalue.0 -1650
    		dbvalue.1 -1650
    	}
    }
    control.10 {
    	iface MIXER
    	name 'Capture Switch'
    	value.0 true
    	value.1 true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 2
    	}
    }
    control.11 {
    	iface MIXER
    	name 'Mic Boost Volume'
    	value.0 0
    	value.1 0
    	comment {
    		access 'read write'
    		type INTEGER
    		count 2
    		range '0 - 3'
    		dbmin 0
    		dbmax 3600
    		dbvalue.0 0
    		dbvalue.1 0
    	}
    }
    control.12 {
    	iface MIXER
    	name 'Internal Mic Boost Volume'
    	value.0 0
    	value.1 0
    	comment {
    		access 'read write'
    		type INTEGER
    		count 2
    		range '0 - 3'
    		dbmin 0
    		dbmax 3600
    		dbvalue.0 0
    		dbvalue.1 0
    	}
    }
    control.13 {
    	iface MIXER
    	name 'Beep Playback Volume'
    	value.0 0
    	value.1 0
    	comment {
    		access 'read write'
    		type INTEGER
    		count 2
    		range '0 - 31'
    		dbmin -3450
    		dbmax 1200
    		dbvalue.0 -3450
    		dbvalue.1 -3450
    	}
    }
    control.14 {
    	iface MIXER
    	name 'Beep Playback Switch'
    	value.0 false
    	value.1 false
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 2
    	}
    }
    control.15 {
    	iface MIXER
    	name 'IEC958 Playback Con Mask'
    	value
'0fff000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.16 {
    	iface MIXER
    	name 'IEC958 Playback Pro Mask'
    	value
'0f00000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.17 {
    	iface MIXER
    	name 'IEC958 Playback Default'
    	value
'0400000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access 'read write'
    		type IEC958
    		count 1
    	}
    }
    control.18 {
    	iface MIXER
    	name 'IEC958 Playback Switch'
    	value false
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
    control.19 {
    	iface MIXER
    	name 'IEC958 Default PCM Playback Switch'
    	value true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
    control.20 {
    	iface MIXER
    	name 'Master Playback Volume'
    	value 81
    	comment {
    		access 'read write'
    		type INTEGER
    		count 1
    		range '0 - 87'
    		dbmin -6525
    		dbmax 0
    		dbvalue.0 -450
    	}
    }
    control.21 {
    	iface MIXER
    	name 'Master Playback Switch'
    	value true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
    control.22 {
    	iface CARD
    	name 'Mic Jack'
    	value false
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.23 {
    	iface CARD
    	name 'Internal Mic Phantom Jack'
    	value true
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.24 {
    	iface CARD
    	name 'Headphone Jack'
    	value false
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.25 {
    	iface CARD
    	name 'Speaker Phantom Jack'
    	value true
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.26 {
    	iface CARD
    	name 'SPDIF Phantom Jack'
    	value true
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.27 {
    	iface PCM
    	name 'Playback Channel Map'
    	value.0 0
    	value.1 0
    	comment {
    		access read
    		type INTEGER
    		count 2
    		range '0 - 36'
    	}
    }
    control.28 {
    	iface PCM
    	name 'Capture Channel Map'
    	value.0 0
    	value.1 0
    	comment {
    		access read
    		type INTEGER
    		count 2
    		range '0 - 36'
    	}
    }
    control.29 {
    	iface PCM
    	device 1
    	name 'Playback Channel Map'
    	value.0 0
    	value.1 0
    	comment {
    		access read
    		type INTEGER
    		count 2
    		range '0 - 36'
    	}
    }
    control.30 {
    	iface MIXER
    	name 'PCM Playback Volume'
    	value.0 128
    	value.1 128
    	comment {
    		access 'read write user'
    		type INTEGER
    		count 2
    		range '0 - 255'
    		tlv '0000000100000008ffffec1400000014'
    		dbmin -5100
    		dbmax 0
    		dbvalue.0 -2540
    		dbvalue.1 -2540
    	}
    }
    control.31 {
    	iface MIXER
    	name 'Digital Capture Volume'
    	value.0 60
    	value.1 60
    	comment {
    		access 'read write user'
    		type INTEGER
    		count 2
    		range '0 - 120'
    		tlv '0000000100000008fffff44800000032'
    		dbmin -3000
    		dbmax 3000
    		dbvalue.0 0
    		dbvalue.1 0
    	}
    }
}
state.NVidia {
    control.1 {
    	iface MIXER
    	name 'IEC958 Playback Con Mask'
    	value
'0fff000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.2 {
    	iface MIXER
    	name 'IEC958 Playback Pro Mask'
    	value
'0f00000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.3 {
    	iface MIXER
    	name 'IEC958 Playback Default'
    	value
'0400000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access 'read write'
    		type IEC958
    		count 1
    	}
    }
    control.4 {
    	iface MIXER
    	name 'IEC958 Playback Switch'
    	value true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
    control.5 {
    	iface CARD
    	name 'HDMI Jack'
    	value false
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.6 {
    	iface PCM
    	device 3
    	name 'Playback Channel Map'
    	value.0 0
    	value.1 0
    	comment {
    		access read
    		type INTEGER
    		count 2
    		range '0 - 36'
    	}
    }
    control.7 {
    	iface MIXER
    	name 'IEC958 Playback Con Mask'
    	index 1
    	value
'0fff000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.8 {
    	iface MIXER
    	name 'IEC958 Playback Pro Mask'
    	index 1
    	value
'0f00000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.9 {
    	iface MIXER
    	name 'IEC958 Playback Default'
    	index 1
    	value
'0400000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access 'read write'
    		type IEC958
    		count 1
    	}
    }
    control.10 {
    	iface MIXER
    	name 'IEC958 Playback Switch'
    	index 1
    	value true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
    control.11 {
    	iface CARD
    	name 'HDMI Jack'
    	index 1
    	value false
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.12 {
    	iface PCM
    	device 7
    	name 'Playback Channel Map'
    	value.0 0
    	value.1 0
    	comment {
    		access read
    		type INTEGER
    		count 2
    		range '0 - 36'
    	}
    }
    control.13 {
    	iface MIXER
    	name 'IEC958 Playback Con Mask'
    	index 2
    	value
'0fff000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.14 {
    	iface MIXER
    	name 'IEC958 Playback Pro Mask'
    	index 2
    	value
'0f00000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.15 {
    	iface MIXER
    	name 'IEC958 Playback Default'
    	index 2
    	value
'0400000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access 'read write'
    		type IEC958
    		count 1
    	}
    }
    control.16 {
    	iface MIXER
    	name 'IEC958 Playback Switch'
    	index 2
    	value true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
    control.17 {
    	iface CARD
    	name 'HDMI Jack'
    	index 2
    	value false
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.18 {
    	iface PCM
    	device 8
    	name 'Playback Channel Map'
    	value.0 0
    	value.1 0
    	comment {
    		access read
    		type INTEGER
    		count 2
    		range '0 - 36'
    	}
    }
    control.19 {
    	iface MIXER
    	name 'IEC958 Playback Con Mask'
    	index 3
    	value
'0fff000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.20 {
    	iface MIXER
    	name 'IEC958 Playback Pro Mask'
    	index 3
    	value
'0f00000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access read
    		type IEC958
    		count 1
    	}
    }
    control.21 {
    	iface MIXER
    	name 'IEC958 Playback Default'
    	index 3
    	value
'0400000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000000000000000'
    	comment {
    		access 'read write'
    		type IEC958
    		count 1
    	}
    }
    control.22 {
    	iface MIXER
    	name 'IEC958 Playback Switch'
    	index 3
    	value true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
    control.23 {
    	iface CARD
    	name 'HDMI Jack'
    	index 3
    	value false
    	comment {
    		access read
    		type BOOLEAN
    		count 1
    	}
    }
    control.24 {
    	iface PCM
    	device 9
    	name 'Playback Channel Map'
    	value.0 0
    	value.1 0
    	comment {
    		access read
    		type INTEGER
    		count 2
    		range '0 - 36'
    	}
    }
}
state.DJ {
    control.1 {
    	iface PCM
    	name 'Playback Channel Map'
    	value.0 0
    	value.1 0
    	value.2 0
    	value.3 0
    	comment {
    		access read
    		type INTEGER
    		count 4
    		range '0 - 36'
    	}
    }
    control.2 {
    	iface MIXER
    	name 'PCM Playback Switch'
    	value.0 true
    	value.1 true
    	value.2 true
    	value.3 true
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 4
    	}
    }
    control.3 {
    	iface MIXER
    	name 'PCM Playback Volume'
    	value.0 320
    	value.1 320
    	value.2 320
    	value.3 320
    	comment {
    		access 'read write'
    		type INTEGER
    		count 4
    		range '0 - 400'
    		dbmin -10000
    		dbmax 0
    		dbvalue.0 -2000
    		dbvalue.1 -2000
    		dbvalue.2 -2000
    		dbvalue.3 -2000
    	}
    }
    control.4 {
    	iface CARD
    	name 'Keep Interface'
    	value false
    	comment {
    		access 'read write'
    		type BOOLEAN
    		count 1
    	}
    }
}
--endcollapse--
!!All Loaded Modules
!!------------------
Module
snd_hrtimer
snd_seq_midi
snd_seq_dummy
snd_seq_midi_event
snd_seq
snd_pcm_oss
snd_mixer_oss
xt_iprange
ipv6
crc_ccitt
arc4
brcmsmac
cordic
brcmutil
mac80211
sha256_ssse3
snd_usb_audio
snd_usbmidi_lib
sha256_generic
snd_rawmidi
cfg80211
snd_seq_device
iTCO_wdt
iTCO_vendor_support
snd_hda_codec_realtek
snd_hda_codec_generic
ledtrig_audio
snd_hda_intel
joydev
snd_hda_codec
acer_wmi
sparse_keymap
bcma
snd_hda_core
rfkill
pcc_cpufreq
snd_hwdep
acpi_cpufreq
snd_pcm
snd_timer
mei_me
snd
mei
pcspkr
soundcore
lpc_ich
i2c_i801
mfd_core
ums_onetouch
usb_storage
dm_crypt
serio_raw
atl1c
nouveau
mxm_wmi
i2c_algo_bit
drm_kms_helper
syscopyarea
sysfillrect
sysimgblt
fb_sys_fops
ttm
wmi
video
drm
i2c_core
!!Sysfs Files
!!-----------
/sys/class/sound/hwC0D0/init_pin_configs:
0x12 0x99a30930
0x14 0x99130110
0x17 0x411111f0
0x18 0x03a19840
0x19 0x411111f0
0x1a 0x411111f0
0x1b 0x411111f0
0x1d 0x4017992d
0x1e 0x03451120
0x21 0x0321101f
/sys/class/sound/hwC0D0/driver_pin_configs:
/sys/class/sound/hwC0D0/user_pin_configs:
/sys/class/sound/hwC0D0/init_verbs:
/sys/class/sound/hwC0D0/hints:
/sys/class/sound/hwC1D0/init_pin_configs:
0x05 0x18560010
/sys/class/sound/hwC1D0/driver_pin_configs:
/sys/class/sound/hwC1D0/user_pin_configs:
/sys/class/sound/hwC1D0/init_verbs:
/sys/class/sound/hwC1D0/hints:
/sys/class/sound/hwC1D1/init_pin_configs:
0x05 0x18560010
/sys/class/sound/hwC1D1/driver_pin_configs:
/sys/class/sound/hwC1D1/user_pin_configs:
/sys/class/sound/hwC1D1/init_verbs:
/sys/class/sound/hwC1D1/hints:
/sys/class/sound/hwC1D2/init_pin_configs:
0x05 0x18560010
/sys/class/sound/hwC1D2/driver_pin_configs:
/sys/class/sound/hwC1D2/user_pin_configs:
/sys/class/sound/hwC1D2/init_verbs:
/sys/class/sound/hwC1D2/hints:
/sys/class/sound/hwC1D3/init_pin_configs:
0x05 0x18560010
/sys/class/sound/hwC1D3/driver_pin_configs:
/sys/class/sound/hwC1D3/user_pin_configs:
/sys/class/sound/hwC1D3/init_verbs:
/sys/class/sound/hwC1D3/hints:
!!ALSA/HDA dmesg
!!--------------
[    0.238633] ACPI: Added _OSI(Linux-Dell-Video)
[    0.238779] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    0.238926] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
--
[   24.240651] input: Acer WMI hotkeys as
/devices/virtual/input/input16
[   24.294387] snd_hda_intel 0000:00:1b.0: enabling device (0000 ->
0002)
[   24.295148] snd_hda_intel 0000:01:00.1: Disabling MSI
[   24.417727] snd_hda_codec_realtek hdaudioC0D0: autoconfig for
ALC269VB: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[   24.418128] snd_hda_codec_realtek hdaudioC0D0:    speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   24.418507] snd_hda_codec_realtek hdaudioC0D0:    hp_outs=1
(0x21/0x0/0x0/0x0/0x0)
[   24.419057] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0
[   24.419695] snd_hda_codec_realtek hdaudioC0D0:    dig-out=0x1e/0x0
[   24.420312] snd_hda_codec_realtek hdaudioC0D0:    inputs:
[   24.420959] snd_hda_codec_realtek hdaudioC0D0:      Mic=0x18
[   24.421602] snd_hda_codec_realtek hdaudioC0D0:      Internal
Mic=0x12
[   24.448267] input: HDA Intel MID Mic as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input17
[   24.448762] input: HDA Intel MID Headphone as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input18
[   24.517380] mei mei::55213584-9a29-4916-badf-0fb7ed682aeb:01: Could
not read FW version
[   24.517783] mei mei::55213584-9a29-4916-badf-0fb7ed682aeb:01: FW
version command failed -5
[   24.606385] snd_hda_codec_generic hdaudioC1D0: autoconfig for
Generic: line_outs=0 (0x0/0x0/0x0/0x0/0x0) type:line
[   24.606759] snd_hda_codec_generic hdaudioC1D0:    speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   24.607115] snd_hda_codec_generic hdaudioC1D0:    hp_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   24.607684] snd_hda_codec_generic hdaudioC1D0:    mono: mono_out=0x0
[   24.608266] snd_hda_codec_generic hdaudioC1D0:    dig-out=0x5/0x0
[   24.608871] snd_hda_codec_generic hdaudioC1D0:    inputs:
[   24.684106] mce: CPU3: Core temperature above threshold, cpu clock
throttled (total events = 1)
--
[   24.770560] iTCO_vendor_support: vendor-support=0
[   24.790526] snd_hda_codec_generic hdaudioC1D1: autoconfig for
Generic: line_outs=0 (0x0/0x0/0x0/0x0/0x0) type:line
[   24.790874] snd_hda_codec_generic hdaudioC1D1:    speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   24.791202] snd_hda_codec_generic hdaudioC1D1:    hp_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   24.791536] snd_hda_codec_generic hdaudioC1D1:    mono: mono_out=0x0
[   24.791995] snd_hda_codec_generic hdaudioC1D1:    dig-out=0x5/0x0
[   24.792477] snd_hda_codec_generic hdaudioC1D1:    inputs:
[   24.799553] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
--
[   24.800621] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[   24.850369] snd_hda_codec_generic hdaudioC1D2: autoconfig for
Generic: line_outs=0 (0x0/0x0/0x0/0x0/0x0) type:line
[   24.850650] snd_hda_codec_generic hdaudioC1D2:    speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   24.850911] snd_hda_codec_generic hdaudioC1D2:    hp_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   24.851165] snd_hda_codec_generic hdaudioC1D2:    mono: mono_out=0x0
[   24.851415] snd_hda_codec_generic hdaudioC1D2:    dig-out=0x5/0x0
[   24.851747] snd_hda_codec_generic hdaudioC1D2:    inputs:
[   25.056813] snd_hda_codec_generic hdaudioC1D3: autoconfig for
Generic: line_outs=0 (0x0/0x0/0x0/0x0/0x0) type:line
[   25.057109] snd_hda_codec_generic hdaudioC1D3:    speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   25.057393] snd_hda_codec_generic hdaudioC1D3:    hp_outs=0
(0x0/0x0/0x0/0x0/0x0)
[   25.057658] snd_hda_codec_generic hdaudioC1D3:    mono: mono_out=0x0
[   25.057924] snd_hda_codec_generic hdaudioC1D3:    dig-out=0x5/0x0
[   25.058180] snd_hda_codec_generic hdaudioC1D3:    inputs:
[   25.094153] input: HDA NVidia HDMI as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input19
[   25.094539] input: HDA NVidia HDMI as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input20
[   25.094891] input: HDA NVidia HDMI as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input21
[   25.095249] input: HDA NVidia HDMI as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input22
[   25.783253] cfg80211: Loading compiled-in X.509 certificates for
regulatory database
--
[   26.044956] usb 2-1.4: [2] FU [PCM Playback Volume] ch = 4, val =
-25600/0/64
[   26.046216] usbcore: registered new interface driver snd-usb-audio
[   26.088396] cfg80211: Problem loading in-kernel X.509 certificate (-
13)
-----------------------
lsusb -v
Bus 002 Device 003: ID 06f8:b121 Guillemot Corp. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x06f8 Guillemot Corp.
  idProduct          0xb121 
  bcdDevice            2.00
  iManufacturer           1 Guillemot Corporation
  iProduct                2 Hercules P32 DJ
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          196
    bNumInterfaces          3
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower              480mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      1 Control Device
      bInterfaceProtocol      0 
      iInterface              0 
      AudioControl Interface Descriptor:
        bLength                10
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength           43
        bInCollection           2
        baInterfaceNr( 0)       1
        baInterfaceNr( 1)       2
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bNrChannels             4
        wChannelConfig     0x0033
          Left Front (L)
          Right Front (R)
          Left Surround (LS)
          Right Surround (RS)
        iChannelNames           0 
        iTerminal               0 
      AudioControl Interface Descriptor:
        bLength                12
        bDescriptorType        36
        bDescriptorSubtype      6 (FEATURE_UNIT)
        bUnitID                 2
        bSourceID               1
        bControlSize            1
        bmaControls( 0)      0x00
        bmaControls( 1)      0x03
          Mute Control
          Volume Control
        bmaControls( 2)      0x03
          Mute Control
          Volume Control
        bmaControls( 3)      0x03
          Mute Control
          Volume Control
        bmaControls( 4)      0x03
          Mute Control
          Volume Control
        iFeature                0 
      AudioControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             3
        wTerminalType      0x0301 Speaker
        bAssocTerminal          0
        bSourceID               2
        iTerminal               0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           2
      bInterfaceClass         1 Audio
      bInterfaceSubClass      2 Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      AudioStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (AS_GENERAL)
        bTerminalLink           1
        bDelay                  1 frames
        wFormatTag              1 PCM
      AudioStreaming Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      2 (FORMAT_TYPE)
        bFormatType             1 (FORMAT_TYPE_I)
        bNrChannels             4
        bSubframeSize           2
        bBitResolution         16
        bSamFreqType            1 Discrete
        tSamFreq[ 0]        48000
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0188  1x 392 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress         129
        AudioControl Endpoint Descriptor:
          bLength                 7
          bDescriptorType        37
          bDescriptorSubtype      1 (EP_GENERAL)
          bmAttributes         0x00
          bLockDelayUnits         0 Undefined
          wLockDelay              0 Undefined
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes           17
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Feedback
        wMaxPacketSize     0x0003  1x 3 bytes
        bInterval               1
        bRefresh                5
        bSynchAddress           0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         1 Audio
      bInterfaceSubClass      3 MIDI Streaming
      bInterfaceProtocol      0 
      iInterface              2 Hercules P32 DJ
      MIDIStreaming Interface Descriptor:
        bLength                 7
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdADC               1.00
        wTotalLength           65
      MIDIStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (MIDI_IN_JACK)
        bJackType               1 Embedded
        bJackID                 1
        iJack                   0 
      MIDIStreaming Interface Descriptor:
        bLength                 6
        bDescriptorType        36
        bDescriptorSubtype      2 (MIDI_IN_JACK)
        bJackType               2 External
        bJackID                 2
        iJack                   0 
      MIDIStreaming Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (MIDI_OUT_JACK)
        bJackType               1 Embedded
        bJackID                 3
        bNrInputPins            1
        baSourceID( 0)          2
        BaSourcePin( 0)         1
        iJack                   0 
      MIDIStreaming Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (MIDI_OUT_JACK)
        bJackType               2 External
        bJackID                 4
        bNrInputPins            1
        baSourceID( 0)          1
        BaSourcePin( 0)         1
        iJack                   0 
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
        bRefresh                0
        bSynchAddress           0
        MIDIStreaming Endpoint Descriptor:
          bLength                 5
          bDescriptorType        37
          bDescriptorSubtype      1 (GENERAL)
          bNumEmbMIDIJack         1
          baAssocJackID( 0)       1
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
        bRefresh                0
        bSynchAddress           0
        MIDIStreaming Endpoint Descriptor:
          bLength                 5
          bDescriptorType        37
          bDescriptorSubtype      1 (GENERAL)
          bNumEmbMIDIJack         1
          baAssocJackID( 0)       3
Device Status:     0x0e01
  Self Powered
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching
Hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x8087 Intel Corp.
  idProduct          0x0020 Integrated Rate Matching Hub
  bcdDevice            0.00
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval              12
Hub Descriptor:
  bLength              11
  bDescriptorType      41
  nNbrPorts             8
  wHubCharacteristic 0x0089
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
    Port indicators
  bPwrOn2PwrGood       50 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00 0x00
  PortPwrCtrlMask    0xff 0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
   Port 4: 0000.0103 power enable connect
   Port 5: 0000.0100 power
   Port 6: 0000.0100 power
   Port 7: 0000.0100 power
   Port 8: 0000.0100 power
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0001
  Self Powered
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            5.00
  iManufacturer           3 Linux 5.0.2 ehci_hcd
  iProduct                2 EHCI Host Controller
  iSerial                 1 0000:00:1d.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0503 highspeed power enable connect
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
Device Status:     0x0001
  Self Powered
Bus 001 Device 005: ID 0d49:7010 Maxtor OneTouch
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0d49 Maxtor
  idProduct          0x7010 OneTouch
  bcdDevice            2.00
  iManufacturer           1 Maxtor
  iProduct                3 OneTouch
  iSerial                 2 Y61LWLCE    
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           39
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x88  EP 8 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval               9
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0001
  Self Powered
Bus 001 Device 003: ID 064e:a219 Suyin Corp. 1.3M WebCam (notebook
emachines E730, Acer sub-brand)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 ?
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x064e Suyin Corp.
  idProduct          0xa219 1.3M WebCam (notebook emachines E730, Acer
sub-brand)
  bcdDevice            2.15
  iManufacturer           2 Suyin
  iProduct                1 1.3M WebCam
  iSerial                 3 HF1315-S32B-OV01-VA-R02.01.05
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          527
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              500mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         2
      bFunctionClass         14 Video
      bFunctionSubClass       3 Video Interface Collection
      bFunctionProtocol       0 
      iFunction               5 1.3M WebCam
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      1 Video Control
      bInterfaceProtocol      0 
      iInterface              5 1.3M WebCam
      VideoControl Interface Descriptor:
        bLength                13
        bDescriptorType        36
        bDescriptorSubtype      1 (HEADER)
        bcdUVC               1.00
        wTotalLength           77
        dwClockFrequency       15.000000MHz
        bInCollection           1
        baInterfaceNr( 0)       1
      VideoControl Interface Descriptor:
        bLength                 9
        bDescriptorType        36
        bDescriptorSubtype      3 (OUTPUT_TERMINAL)
        bTerminalID             2
        wTerminalType      0x0101 USB Streaming
        bAssocTerminal          0
        bSourceID               4
        iTerminal               0 
      VideoControl Interface Descriptor:
        bLength                26
        bDescriptorType        36
        bDescriptorSubtype      6 (EXTENSION_UNIT)
        bUnitID                 4
        guidExtensionCode         {7033f028-1163-2e4a-ba2c-
6890eb334016}
        bNumControl             8
        bNrPins                 1
        baSourceID( 0)          3
        bControlSize            1
        bmControls( 0)       0x0f
        iExtension              0 
      VideoControl Interface Descriptor:
        bLength                18
        bDescriptorType        36
        bDescriptorSubtype      2 (INPUT_TERMINAL)
        bTerminalID             1
        wTerminalType      0x0201 Camera Sensor
        bAssocTerminal          0
        iTerminal               0 
        wObjectiveFocalLengthMin      0
        wObjectiveFocalLengthMax      0
        wOcularFocalLength            0
        bControlSize                  3
        bmControls           0x00000000
      VideoControl Interface Descriptor:
        bLength                11
        bDescriptorType        36
        bDescriptorSubtype      5 (PROCESSING_UNIT)
      Warning: Descriptor too short
        bUnitID                 3
        bSourceID               1
        wMaxMultiplier          0
        bControlSize            2
        bmControls     0x0000153f
          Brightness
          Contrast
          Hue
          Saturation
          Sharpness
          Gamma
          Backlight Compensation
          Power Line Frequency
          White Balance Temperature, Auto
        iProcessing             0 
        bmVideoStandards     0xc6
          NTSC - 525/60
          PAL - 625/50
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0010  1x 16 bytes
        bInterval               6
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              5 1.3M WebCam
      VideoStreaming Interface Descriptor:
        bLength                            14
        bDescriptorType                    36
        bDescriptorSubtype                  1 (INPUT_HEADER)
        bNumFormats                         1
        wTotalLength                      307
        bEndPointAddress                  129
        bmInfo                              0
        bTerminalLink                       2
        bStillCaptureMethod                 2
        bTriggerSupport                     0
        bTriggerUsage                       0
        bControlSize                        1
        bmaControls( 0)                    27
      VideoStreaming Interface Descriptor:
        bLength                            27
        bDescriptorType                    36
        bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
        bFormatIndex                        1
        bNumFrameDescriptors                7
        guidFormat                            {59555932-0000-1000-8000-
00aa00389b71}
        bBitsPerPixel                      16
        bDefaultFrameIndex                  1
        bAspectRatioX                       0
        bAspectRatioY                       0
        bmInterlaceFlags                 0x00
          Interlaced stream or variable: No
          Fields per frame: 2 fields
          Field 1 first: No
          Field pattern: Field 1 only
          bCopyProtect                      0
      VideoStreaming Interface Descriptor:
        bLength                            34
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         1
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            640
        wHeight                           480
        dwMinBitRate                 73728000
        dwMaxBitRate                147456000
        dwMaxVideoFrameBufferSize      614400
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  2
        dwFrameInterval( 0)            333333
        dwFrameInterval( 1)            666666
      VideoStreaming Interface Descriptor:
        bLength                            34
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         2
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            352
        wHeight                           288
        dwMinBitRate                 24330240
        dwMaxBitRate                 48660480
        dwMaxVideoFrameBufferSize      202752
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  2
        dwFrameInterval( 0)            333333
        dwFrameInterval( 1)            666666
      VideoStreaming Interface Descriptor:
        bLength                            34
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         3
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            320
        wHeight                           240
        dwMinBitRate                 18432000
        dwMaxBitRate                 36864000
        dwMaxVideoFrameBufferSize      153600
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  2
        dwFrameInterval( 0)            333333
        dwFrameInterval( 1)            666666
      VideoStreaming Interface Descriptor:
        bLength                            34
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         4
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            176
        wHeight                           144
        dwMinBitRate                  6082560
        dwMaxBitRate                 12165120
        dwMaxVideoFrameBufferSize       50688
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  2
        dwFrameInterval( 0)            333333
        dwFrameInterval( 1)            666666
      VideoStreaming Interface Descriptor:
        bLength                            34
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         5
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                            160
        wHeight                           120
        dwMinBitRate                  4608000
        dwMaxBitRate                  9216000
        dwMaxVideoFrameBufferSize       38400
        dwDefaultFrameInterval         333333
        bFrameIntervalType                  2
        dwFrameInterval( 0)            333333
        dwFrameInterval( 1)            666666
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         6
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                           1280
        wHeight                           800
        dwMinBitRate                122880000
        dwMaxBitRate                122880000
        dwMaxVideoFrameBufferSize     2048000
        dwDefaultFrameInterval        1333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)           1333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
        bFrameIndex                         7
        bmCapabilities                   0x00
          Still image unsupported
        wWidth                           1280
        wHeight                          1024
        dwMinBitRate                157286400
        dwMaxBitRate                157286400
        dwMaxVideoFrameBufferSize     2621440
        dwDefaultFrameInterval        1333333
        bFrameIntervalType                  1
        dwFrameInterval( 0)           1333333
      VideoStreaming Interface Descriptor:
        bLength                            30
        bDescriptorType                    36
        bDescriptorSubtype                  3 (STILL_IMAGE_FRAME)
        bEndpointAddress                    0
        bNumImageSizePatterns               6
        wWidth( 0)                       1280
        wHeight( 0)                      1024
        wWidth( 1)                        640
        wHeight( 1)                       480
        wWidth( 2)                        320
        wHeight( 2)                       240
        wWidth( 3)                        320
        wHeight( 3)                       240
        wWidth( 4)                        176
        wHeight( 4)                       144
        wWidth( 5)                        160
        wHeight( 5)                       120
        bNumCompressionPatterns             6
      VideoStreaming Interface Descriptor:
        bLength                             6
        bDescriptorType                    36
        bDescriptorSubtype                 13 (COLORFORMAT)
        bColorPrimaries                     1 (BT.709,sRGB)
        bTransferCharacteristics            1 (BT.709)
        bMatrixCoefficients                 4 (SMPTE 170M (BT.601))
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0080  1x 128 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       2
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0100  1x 256 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       3
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0320  1x 800 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       4
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x0b20  2x 800 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       5
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x1320  3x 800 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       6
      bNumEndpoints           1
      bInterfaceClass        14 Video
      bInterfaceSubClass      2 Video Streaming
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            5
          Transfer Type            Isochronous
          Synch Type               Asynchronous
          Usage Type               Data
        wMaxPacketSize     0x1400  3x 1024 bytes
        bInterval               1
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 ?
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0002
  (Bus Powered)
  Remote Wakeup Enabled
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching
Hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x8087 Intel Corp.
  idProduct          0x0020 Integrated Rate Matching Hub
  bcdDevice            0.00
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             6
  wHubCharacteristic 0x0089
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
    Port indicators
  bPwrOn2PwrGood       50 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0503 highspeed power enable connect
   Port 2: 0000.0503 highspeed power enable connect
   Port 3: 0000.0100 power
   Port 4: 0000.0100 power
   Port 5: 0000.0100 power
   Port 6: 0000.0100 power
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0001
  Self Powered
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            5.00
  iManufacturer           3 Linux 5.0.2 ehci_hcd
  iProduct                2 EHCI Host Controller
  iSerial                 1 0000:00:1a.0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0503 highspeed power enable connect
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
Device Status:     0x0001
  Self Powered
Does anybody know how to fix this problem ?
Regards,
Guido

[alsa-devel] Hercules P32 DJ: severe sound distortion during MIDI transfers

Guido Trentalancia