Re: USB sound device present but NOT visible in ‘alsamixer’
Andrei POPESCU <andreimpopescu@gmail.com> writes:
>> During the boot process, the system detects everything. So there must be
>> something in the init sequence that I can trigger manually.
>
> You can try to unload and reload the corresponding kernel module. Check
> the output of
>
> lsmod | grep snd
>
> (it's probably snd-usb-audio)
>
> If it works it might be possible to add the module to some list so that
> it is removed on suspend and loaded on resume.
Thanks Andrei.
"lsmod|grep snd" results in,
--8<---------------cut here---------------start------------->8---
pankaj@anant:~$ sudo lsmod |grep snd
snd_usb_audio 315392 3
snd_usbmidi_lib 40960 1 snd_usb_audio
snd_rawmidi 45056 1 snd_usbmidi_lib
snd_seq_device 16384 1 snd_rawmidi
mc 61440 1 snd_usb_audio
snd_hda_codec_hdmi 73728 2
snd_hda_intel 57344 3
snd_intel_dspcfg 28672 1 snd_hda_intel
soundwire_intel 45056 1 snd_intel_dspcfg
snd_soc_core 315392 1 soundwire_intel
snd_compress 32768 1 snd_soc_core
snd_hda_codec 172032 2 snd_hda_codec_hdmi,snd_hda_intel
snd_hda_core 110592 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_hwdep 16384 2 snd_usb_audio,snd_hda_codec
snd_pcm 135168 8 snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,soundwire_intel,snd_compress,snd_soc_core,snd_hda_core
snd_timer 49152 1 snd_pcm
snd 110592 24 snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmidi_lib,snd_hda_codec,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
soundcore 16384 1 snd
usbcore 323584 6 xhci_hcd,snd_usb_audio,usbhid,snd_usbmidi_lib,btusb,xhci_pci
--8<---------------cut here---------------end--------------->8---
when I say "modprobe -r snd_usb_audio". It says "Module snd_usb_audio is
in use". I tried with "-f" option as well. Still cannot unload. Then I
tried to it again after "alsactl kill quit"; but still cannot unload.
Also "alsactl init" is producing some errors also. I shared in my
previous email. Copying here again for the context.
--8<---------------cut here---------------start------------->8---
pankaj@anant:~$ sudo alsactl init
alsa-lib parser.c:260:(error_node) UCM is not supported for this HDA model (HDA ATI HDMI at 0xfca60000 irq 102)
alsa-lib main.c:1014:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -6
Found hardware: "HDA-Intel" "ATI R6xx HDMI" "HDA:1002aa01,00aa0100,00100700" "0x1462" "0xaaf0"
Hardware is initialized using a generic method
alsa-lib parser.c:260:(error_node) UCM is not supported for this HDA model (HDA ATI HDMI at 0xfce60000 irq 120)
alsa-lib main.c:1014:(snd_use_case_mgr_open) error: failed to import hw:1 use case configuration -6
Found hardware: "HDA-Intel" "ATI R6xx HDMI" "HDA:1002aa01,00aa0100,00100700" "0x1462" "0xaaf0"
Hardware is initialized using a generic method
alsa-lib parser.c:260:(error_node) UCM is not supported for this HDA model (HD-Audio Generic at 0xfcd00000 irq 122)
alsa-lib main.c:1014:(snd_use_case_mgr_open) error: failed to import hw:2 use case configuration -6
Found hardware: "HDA-Intel" "" "" "0x1462" "0xed54"
Hardware is initialized using a generic method
alsa-lib main.c:1014:(snd_use_case_mgr_open) error: failed to import hw:3 use case configuration -2
Found hardware: "USB-Audio" "USB Mixer" "USB046d:0ab7" "" ""
Hardware is initialized using a generic method
alsa-lib main.c:1014:(snd_use_case_mgr_open) error: failed to import hw:4 use case configuration -2
Found hardware: "USB-Audio" "USB Mixer" "USB0db0:a073" "" ""
Hardware is initialized using a generic method
--8<---------------cut here---------------end--------------->8---
What other options may I try?
Regards ~Pankaj
Reply to: