Hello,
don't know if I need to report my problem in alsa-dev list for the driver or linux-dev list for the usb interface, please correct me if I post in wrong mailing.
sometimes, my USB audio device disappears from the system, the only way to make it appears again is to disconnect/reconnect the usb wire.
Here are the traces I took :
USB DAC suddenly disappears, from dmesg I can see:
[13083.161157] usb 1-1.3: 1:2: usb_set_interface failed (-110) [13083.316344] usb 1-1.3: 1:2: usb_set_interface failed (-71) [13083.471927] usb 1-1.3: 1:2: usb_set_interface failed (-71) [13083.789810] usb 1-1.3: 1:2: usb_set_interface failed (-71)
rmmod/modprobe snd-usb-audio:
[13882.343950] usbcore: deregistering interface driver snd-usb-audio [13891.187513] usb 1-1.3: parse_audio_format_rates_v2(): unable to find clock source (clock -71) [13891.200234] usb 1-1.3: parse_audio_format_rates_v2(): unable to find clock source (clock -71) [13891.242722] usb 1-1.3: cannot get ctl value: req = 0x83, wValue = 0x201, wIndex = 0xa00, type = 4 [13891.242728] usb 1-1.3: 10:0: cannot get min/max values for control 2 (id 10) [13891.255466] usb 1-1.3: cannot get ctl value: req = 0x83, wValue = 0x200, wIndex = 0xa00, type = 4 [13891.255471] usb 1-1.3: 10:0: cannot get min/max values for control 2 (id 10) [13891.255737] usbcore: registered new interface driver snd-usb-audio [13891.276723] usb 1-1.3: cannot get ctl value: req = 0x81, wValue = 0x101, wIndex = 0xa00, type = 1 [13891.284222] usb 1-1.3: cannot get ctl value: req = 0x81, wValue = 0x101, wIndex = 0xa00, type = 1 [13891.290842] usb 1-1.3: cannot get ctl value: req = 0x81, wValue = 0x101, wIndex = 0xa00, type = 1 [13891.297210] usb 1-1.3: cannot get ctl value: req = 0x81, wValue = 0x101, wIndex = 0xa00, type = 1
from "aplay -l" the card is seen as : card 1: U0x249c0x9313 [USB Device 0x249c:0x9313], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
after disconnected/reconnected the usb wire: card 1: UAC2 [YoungDSD UAC2], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
[16005.411254] usb 1-1.3: USB disconnect, device number 4 [16007.132442] usb 1-1.3: new high-speed USB device number 6 using ehci-pci [16007.250087] input: M2Tech YoungDSD UAC2 as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.3/0003:249C:9313.0006/input/input22 [16007.250233] hid-generic 0003:249C:9313.0006: input,hidraw2: USB HID v1.10 Device [M2Tech YoungDSD UAC2] on usb-0000:00:1a.0-1.3/input3
Is there any debug i could turn on to get more informations?
Additional informations: # ./aadebug ALSA Audio Debug v0.2.0 - Wed Dec 10 19:56:00 CET 2014 http://alsa.opensrc.org/aadebug http://www.gnu.org/licenses/agpl-3.0.txt
Kernel ---------------------------------------------------- Linux TEVERE 3.16.3 #1 SMP Sun Nov 23 16:17:25 CET 2014 x86_64 GNU/Linux Advanced Linux Sound Architecture Driver Version k3.16.3.
Loaded Modules -------------------------------------------- snd_usb_audio 105962 1 snd_hda_codec_hdmi 31141 1 snd_hda_codec_realtek 47854 1 snd_hda_codec_generic 39920 1 snd_hda_codec_realtek snd_usbmidi_lib 16134 1 snd_usb_audio snd_rawmidi 14042 1 snd_usbmidi_lib snd_hda_intel 18271 0 snd_hda_controller 15146 1 snd_hda_intel snd_hda_codec 73127 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller snd_hwdep 4949 2 snd_usb_audio,snd_hda_codec snd_pcm 59473 6 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
Proc Asound ----------------------------------------------- 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xf7c10000 irq 45 1 [UAC2 ]: USB-Audio - YoungDSD UAC2 M2Tech YoungDSD UAC2 at usb-0000:00:1a.0-1.3, high speed 2: [ 1] : control 3: [ 1- 0]: digital audio playback 4: [ 0] : control 5: [ 0- 0]: digital audio playback 6: [ 0- 0]: digital audio capture 7: [ 0- 1]: digital audio playback 8: [ 0- 2]: digital audio capture 9: [ 0- 3]: digital audio playback 10: [ 0- 7]: digital audio playback 11: [ 0- 2]: hardware dependent 12: [ 0- 3]: hardware dependent 33: : timer 00-02: HDA Codec 2 00-03: HDA Codec 3 00-00: ALC892 Analog : ALC892 Analog : playback 1 : capture 1 00-01: ALC892 Digital : ALC892 Digital : playback 1 00-02: ALC892 Alt Analog : ALC892 Alt Analog : capture 1 00-03: HDMI 0 : HDMI 0 : playback 1 00-07: HDMI 1 : HDMI 1 : playback 1 01-00: USB Audio : USB Audio : playback 1 cat: can't open '/proc/asound/seq/clients': No such file or directory
Dev Snd --------------------------------------------------- total 0 drwxr-xr-x 2 root root 60 Dec 10 18:28 by-id drwxr-xr-x 2 root root 80 Dec 10 18:28 by-path crw-rw---- 1 root audio 116, 4 Dec 10 14:01 controlC0 crw-rw---- 1 root audio 116, 2 Dec 10 18:28 controlC1 crw-rw---- 1 root audio 116, 11 Dec 10 14:01 hwC0D2 crw-rw---- 1 root audio 116, 12 Dec 10 14:01 hwC0D3 crw-rw---- 1 root audio 116, 6 Dec 10 14:01 pcmC0D0c crw-rw---- 1 root audio 116, 5 Dec 10 19:27 pcmC0D0p crw-rw---- 1 root audio 116, 7 Dec 10 14:01 pcmC0D1p crw-rw---- 1 root audio 116, 8 Dec 10 14:01 pcmC0D2c crw-rw---- 1 root audio 116, 9 Dec 10 14:01 pcmC0D3p crw-rw---- 1 root audio 116, 10 Dec 10 14:01 pcmC0D7p crw-rw---- 1 root audio 116, 3 Dec 10 19:29 pcmC1D0p crw-rw---- 1 root audio 116, 33 Dec 10 14:01 timer
CPU ------------------------------------------------------- model name : Intel(R) Celeron(R) CPU G470 @ 2.00GHz cpu MHz : 1711.718 model name : Intel(R) Celeron(R) CPU G470 @ 2.00GHz cpu MHz : 1697.812
RAM ------------------------------------------------------- MemTotal: 1859156 kB SwapTotal: 0 kB
Hardware -------------------------------------------------- 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
Interupts ------------------------------------------------- CPU0 CPU1 0: 14 0 IO-APIC-edge timer 1: 2 0 IO-APIC-edge i8042 8: 1 0 IO-APIC-edge rtc0 9: 3 0 IO-APIC-fasteoi acpi 12: 4 0 IO-APIC-edge i8042 16: 15139141 0 IO-APIC-fasteoi ehci_hcd:usb1 23: 37 0 IO-APIC-fasteoi ehci_hcd:usb2 40: 386062 0 PCI-MSI-edge i915 41: 9653 0 PCI-MSI-edge ahci 42: 815667 0 PCI-MSI-edge eth0 43: 0 0 PCI-MSI-edge eth1 44: 0 0 PCI-MSI-edge xhci_hcd 45: 19140 0 PCI-MSI-edge snd_hda_intel NMI: 48 32 Non-maskable interrupts LOC: 4562425 1085862 Local timer interrupts SPU: 0 0 Spurious interrupts PMI: 48 32 Performance monitoring interrupts IWI: 0 0 IRQ work interrupts RTR: 1 0 APIC ICR read retries RES: 21236 17958 Rescheduling interrupts CAL: 136 121 Function call interrupts TLB: 2095 2460 TLB shootdowns ERR: 0 MIS: 0
Thanks for helping me understand this problem.
-- Mobidyc