[alsa-devel] Setting gain/volume of PCM capture or playback

erumusele Odigie erumusele at gmail.com
Tue Jun 9 10:12:23 CEST 2009


Thanks again Fausto,

I really appreciate your help.

I can see how your code works, and also it should be possible to do the
exact same thing with amixer. However I have noticed that I can only control
some of the "simple mixer controls" in a mixer but not all of them. It
appears I can control the simple mixer controls that have "volume"
capability, but I cannot control simple mixer controls with the pvolume,
pswitch, cvolume, cswitch etc.

The command I use is this: amixer -c 0 cset name='Ext Mic Boost' 0


but if I try
amixer -c 0 cset name='Capture' 1

I get the following error

amixer: Cannot find the given element from control hw:0

I have attached the also-info.txt for my machine to this mail.



Thanks
Erumusele

On Mon, Jun 8, 2009 at 6:59 AM, Fausto Carvalho Marques SIlva <
fausto at tse.gov.br> wrote:

> I think you could do that way :
>
> *****************************************************************
>   if (salsa_volume(hctl,"PCM Playback Volume",volume)) {
>       salsa_close(hctl);
>       return;
>   }
> *****************************************************************
>
> *****************************************************************
> static int salsa_volume(snd_hctl_t * hctl,char * device,int vol)
> {
>   int err;
>
>
>   snd_ctl_elem_id_t *id;
>   snd_ctl_elem_value_t *control;
>
>   snd_ctl_elem_id_alloca(&id);
>   snd_ctl_elem_id_set_name(id,device);
>   snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);
>
>   snd_hctl_elem_t *elem = snd_hctl_find_elem(hctl, id);
>
>   snd_ctl_elem_value_alloca(&control);
>   snd_ctl_elem_value_set_id(control, id);
>
>   if (vol>= 0 && vol<=31) {
>       snd_ctl_elem_value_set_integer(control,1,vol);
>       snd_ctl_elem_value_set_integer(control,0,vol);
>   } else
>       return -1;
>
>   err = snd_hctl_elem_write(elem, control);
>
>   if (err < 0)
>       return -1;
>   return 0;
> }
> *****************************************************************
>
>
> Helped??
>
> erumusele Odigie wrote:
>
>> Hi,
>>
>> I am new to programming with ALSA, and I would like to find out how to
>> change the gain (capture or playback) for my PCM device in my C code.
>>
>> I am aware I am supposed to use the mixer API, possibly functions like:
>> snd_mixer_selem_set_playback_volume()
>>
>> but I don't know how this function can be connected to my PCM
>> structure/device.
>>
>> Please whoever answers this should kindly attach some sample code, or a
>> link
>> to sample code because I can't find any on line.
>>
>> Thanks a lot.
>>
>> Erumusele
>> _______________________________________________
>> Alsa-devel mailing list
>> Alsa-devel at alsa-project.org
>> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>>
>>
>>
>
>
> --
> Fausto Carvalho
> TSE/STI/CSELE/SEVIN
> 61 3316-3527
>
>
-------------- next part --------------
upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.56
!!################################

!!Script ran on: Sat Jun  6 19:53:34 UTC 2009


!!Linux Distribution
!!------------------

Ubuntu 9.04 \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 9.04"


!!DMI Information
!!---------------

Manufacturer:      
Product Name:      


!!Kernel Information
!!------------------

Kernel release:    2.6.28-11-generic
Operating System:  GNU/Linux
Architecture:      i686
Processor:         unknown
SMP Enabled:       Yes


!!ALSA Version
!!------------

Driver version:     1.0.18rc3
Library version:    1.0.18
Utilities version:  1.0.18


!!Loaded ALSA modules
!!-------------------

snd_hda_intel


!!Sound Servers on this system
!!----------------------------

Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - Yes

ESound Daemon:
      Installed - Yes (/usr/bin/esd)
      Running - No


!!Soundcards recognised by ALSA
!!-----------------------------

 0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xdc440000 irq 22


!!PCI Soundcards installed in the system
!!--------------------------------------

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
06:04.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)


!!Advanced information - PCI Vendor/Device/Susbsystem ID's
!!--------------------------------------------------------

00:1b.0 0403: 8086:27d8 (rev 02)
	Subsystem: 1179:ff01


!!Modprobe options (Sound related)
!!--------------------------------

snd-atiixp-modem: index=-2
snd-intel8x0m: index=-2
snd-via82xx-modem: index=-2
snd-usb-audio: index=-2
snd-usb-us122l: index=-2
snd-usb-usx2y: index=-2
snd-usb-caiaq: index=-2
snd-cmipci: mpu_port=0x330 fm_port=0x388
snd-pcsp: index=-2


!!Loaded sound module options
!!--------------------------

!!Module: snd_hda_intel
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
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 : 0
id : <NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<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
model : <NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>,<NULL>
position_fix : 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
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
single_cmd : N


!!HDA-Intel Codec information
!!---------------------------
--startcollapse--

Codec: Realtek ALC861-VD
Address: 0
Vendor Id: 0x10ec0862
Subsystem Id: 0x11790104
Revision Id: 0x100001
No Modem Function Group found
Default PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
GPIO: io=2, o=0, i=0, unsolicited=1, wake=0
  IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0
  IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0
Node 0x02 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals:  [0x08 0x08]
  Converter: stream=5, channel=0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x03 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals:  [0x05 0x05]
  Converter: stream=5, channel=0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x04 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals:  [0x00 0x00]
  Converter: stream=5, channel=0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x05 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals:  [0x00 0x00]
  Converter: stream=5, channel=0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x06 [Audio Output] wcaps 0x211: Stereo Digital
  Converter: stream=0, channel=0
  Digital:
  Digital category: 0x0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0x1e]: 16 20 24 32
    formats [0x1]: PCM
Node 0x07 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x08 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x09 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Amp-In caps: ofs=0x09, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals:  [0x1f 0x1f]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x160]: 44100 48000 96000
    bits [0x6]: 16 20
    formats [0x1]: PCM
  Connection: 1
     0x22
Node 0x0a [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals:  [0x82 0x82] [0x1f 0x1f] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x8d 0x8d]
  Connection: 6
     0x18 0x19 0x1a 0x1b 0x1c 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] [0x00 0x00]
  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] [0x00 0x00]
  Connection: 2
     0x03 0x0b
Node 0x0e [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]
  Connection: 2
     0x04 0x0b
Node 0x0f [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]
  Connection: 2
     0x05 0x0b
Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x11 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x12 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x13 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x14 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x0001003c: IN OUT HP EAPD Detect
  EAPD 0x0:
  Pin Default 0x99030110: [Fixed] Line Out at Int ATAPI
    Conn = ATAPI, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0c
Node 0x15 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  Pincap 0x00010034: IN OUT EAPD Detect
  EAPD 0x0:
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=04, enabled=1
  Connection: 1
     0x0d
Node 0x16 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  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: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0e
Node 0x17 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x00 0x00]
  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: 0x40: OUT
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0f
Node 0x18 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x02 0x02]
  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 0x02a11830: [Jack] Mic at Ext Front
    Conn = 1/8, Color = Black
    DefAssociation = 0x3, Sequence = 0x0
  Pin-ctls: 0x21: IN VREF_50
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x0e
Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x02 0x02]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x0000173c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x99a3013f: [Fixed] Mic at Int ATAPI
    Conn = ATAPI, Color = Unknown
    DefAssociation = 0x3, Sequence = 0xf
    Misc = NO_PRESENCE
  Pin-ctls: 0x21: IN VREF_50
  Unsolicited: tag=00, enabled=0
  Connection: 2
     0x0c* 0x0f
Node 0x1a [Pin Complex] wcaps 0x40018d: Stereo Amp-Out
  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: 1
     0x0d
Node 0x1b [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals:  [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals:  [0x80 0x80]
  Pincap 0x0000173c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80
  Pin Default 0x02211020: [Jack] HP Out at Ext Front
    Conn = 1/8, Color = Black
    DefAssociation = 0x2, Sequence = 0x0
  Pin-ctls: 0x20: IN VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Connection: 2
     0x0c* 0x0f
Node 0x1c [Pin Complex] wcaps 0x400001: Stereo
  Pincap 0x00000020: IN
  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
Node 0x1d [Pin Complex] wcaps 0x400000: Mono
  Pincap 0x00000020: IN
  Pin Default 0x418311f0: [N/A] Line In at Ext Rear
    Conn = ATAPI, Color = Black
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x20: IN
Node 0x1e [Pin Complex] wcaps 0x400300: Mono Digital
  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: 0x40: OUT
  Connection: 1
     0x06
Node 0x1f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono
  Processing caps: benign=0, ncoeff=17
Node 0x21 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x22 [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] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 11
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 0x0b
Node 0x23 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x24 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x25 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x26 [Vendor Defined Widget] wcaps 0xf00000: Mono
Codec: LSI ID 1040
Address: 1
Vendor Id: 0x11c11040
Subsystem Id: 0x11790001
Revision Id: 0x100200
Modem Function Group: 0x1
--endcollapse--


!!ALSA Device nodes
!!-----------------

crw-rw----+ 1 root audio 116, 6 Jun  5 00:06 /dev/snd/controlC0
crw-rw----+ 1 root audio 116, 5 Jun  5 20:10 /dev/snd/pcmC0D0c
crw-rw----+ 1 root audio 116, 4 Jun  5 19:42 /dev/snd/pcmC0D0p
crw-rw----+ 1 root audio 116, 3 Jun  5 00:06 /dev/snd/seq
crw-rw----+ 1 root audio 116, 2 Jun  5 00:06 /dev/snd/timer


!!Aplay/Arecord output
!!------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC861VD Analog [ALC861VD Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC861VD Analog [ALC861VD Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

!!Amixer output
!!-------------

!!-------Mixer controls for card 0 [Intel]

Card hw:0 'Intel'/'HDA Intel at 0xdc440000 irq 22'
  Mixer name	: 'Realtek ALC861-VD'
  Components	: 'HDA:10ec0862,11790104,00100001 HDA:11c11040,11790001,00100200'
  Controls      : 19
  Simple ctrls  : 12
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 8 [12%] [-56.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 61 [95%] [-3.00dB] [on]
  Front Right: Playback 61 [95%] [-3.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 68 [27%] [-37.40dB]
  Front Right: Playback 68 [27%] [-37.40dB]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 31 [100%] [33.00dB] [on]
  Front Right: Capture 31 [100%] [33.00dB] [on]
Simple mixer control 'Digital',0
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 0 [0%] [-30.00dB]
  Front Right: Capture 0 [0%] [-30.00dB]
Simple mixer control 'Ext Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 2 [6%] [-31.50dB] [off]
  Front Right: Playback 2 [6%] [-31.50dB] [off]
Simple mixer control 'Ext Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 2 [67%]
  Front Right: 2 [67%]
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Ext Mic' 'Int Mic'
  Item0: 'Ext Mic'
Simple mixer control 'Int Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [12.00dB] [on]
  Front Right: Playback 31 [100%] [12.00dB] [on]
Simple mixer control 'Int Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 2 [67%]
  Front Right: 2 [67%]
Simple mixer control 'PC Beep',0
  Capabilities: volume pswitch
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 31
  Front Left: 13 [42%] [-15.00dB] Playback [off]
  Front Right: 13 [42%] [-15.00dB] Playback [off]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB] [on]
  Front Right: Playback 64 [100%] [0.00dB] [on]


!!Alsactl output
!!-------------

--startcollapse--
state.Intel {
	control.1 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 64'
		comment.dbmin -6400
		comment.dbmax 0
		iface MIXER
		name 'Speaker Playback Volume'
		value.0 64
		value.1 64
	}
	control.2 {
		comment.access 'read write'
		comment.type BOOLEAN
		comment.count 2
		iface MIXER
		name 'Speaker Playback Switch'
		value.0 true
		value.1 true
	}
	control.3 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 64'
		comment.dbmin -6400
		comment.dbmax 0
		iface MIXER
		name 'Headphone Playback Volume'
		value.0 61
		value.1 61
	}
	control.4 {
		comment.access 'read write'
		comment.type BOOLEAN
		comment.count 2
		iface MIXER
		name 'Headphone Playback Switch'
		value.0 true
		value.1 true
	}
	control.5 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 3'
		comment.dbmin 0
		comment.dbmax 3000
		iface MIXER
		name 'Ext Mic Boost'
		value.0 2
		value.1 2
	}
	control.6 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 31'
		comment.dbmin -3450
		comment.dbmax 1200
		iface MIXER
		name 'Ext Mic Playback Volume'
		value.0 2
		value.1 2
	}
	control.7 {
		comment.access 'read write'
		comment.type BOOLEAN
		comment.count 2
		iface MIXER
		name 'Ext Mic Playback Switch'
		value.0 false
		value.1 false
	}
	control.8 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 3'
		comment.dbmin 0
		comment.dbmax 3000
		iface MIXER
		name 'Int Mic Boost'
		value.0 2
		value.1 2
	}
	control.9 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 31'
		comment.dbmin -3450
		comment.dbmax 1200
		iface MIXER
		name 'Int Mic Playback Volume'
		value.0 31
		value.1 31
	}
	control.10 {
		comment.access 'read write'
		comment.type BOOLEAN
		comment.count 2
		iface MIXER
		name 'Int Mic Playback Switch'
		value.0 true
		value.1 true
	}
	control.11 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 31'
		comment.dbmin -3450
		comment.dbmax 1200
		iface MIXER
		name 'PC Beep Volume'
		value.0 13
		value.1 13
	}
	control.12 {
		comment.access 'read write'
		comment.type BOOLEAN
		comment.count 2
		iface MIXER
		name 'PC Beep Switch'
		value.0 false
		value.1 false
	}
	control.13 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 31'
		comment.dbmin -1350
		comment.dbmax 3300
		iface MIXER
		name 'Capture Volume'
		value.0 31
		value.1 31
	}
	control.14 {
		comment.access 'read write'
		comment.type BOOLEAN
		comment.count 2
		iface MIXER
		name 'Capture Switch'
		value.0 true
		value.1 true
	}
	control.15 {
		comment.access 'read write'
		comment.type ENUMERATED
		comment.count 1
		comment.item.0 'Ext Mic'
		comment.item.1 'Int Mic'
		iface MIXER
		name 'Input Source'
		value 'Ext Mic'
	}
	control.16 {
		comment.access 'read write'
		comment.type INTEGER
		comment.count 1
		comment.range '0 - 64'
		comment.dbmin -6400
		comment.dbmax 0
		iface MIXER
		name 'Master Playback Volume'
		value 8
	}
	control.17 {
		comment.access 'read write'
		comment.type BOOLEAN
		comment.count 1
		iface MIXER
		name 'Master Playback Switch'
		value true
	}
	control.18 {
		comment.access 'read write user'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 255'
		comment.tlv '0000000100000008ffffec1400000014'
		comment.dbmin -5100
		comment.dbmax 0
		iface MIXER
		name 'PCM Playback Volume'
		value.0 68
		value.1 68
	}
	control.19 {
		comment.access 'read write user'
		comment.type INTEGER
		comment.count 2
		comment.range '0 - 120'
		comment.tlv '0000000100000008fffff44800000032'
		comment.dbmin -3000
		comment.dbmax 3000
		iface MIXER
		name 'Digital Capture Volume'
		value.0 0
		value.1 0
	}
}
--endcollapse--


!!All Loaded Modules
!!------------------

Module
i915
drm
binfmt_misc
ppdev
bridge
stp
bnep
joydev
lp
parport
snd_hda_intel
snd_pcm_oss
snd_mixer_oss
snd_pcm
arc4
ecb
snd_seq_dummy
snd_seq_oss
pcmcia
snd_seq_midi
snd_rawmidi
ath5k
iTCO_wdt
snd_seq_midi_event
mac80211
iTCO_vendor_support
snd_seq
sdhci_pci
psmouse
tifm_7xx1
led_class
snd_timer
snd_seq_device
sdhci
serio_raw
pcspkr
yenta_socket
rsrc_nonstatic
pcmcia_core
tifm_core
intel_agp
agpgart
cfg80211
snd
soundcore
snd_page_alloc
input_polldev
video
output
ohci1394
ieee1394
r8169
mii
fbcon
tileblit
font
bitblit
softcursor



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