Re: Tarjeta de sonido USB

[Debian <javier.debian.bb.ar@gmail.com>]

El 23/2/22 a las 12:35, Josu Lazkano escribió:
> Buenas tardes,
>
> He comprado una tarjeta de sonido USB para poder conectar a un servidor 
> con Debian y poder sacar el sonido mediante un contenedor Docker. El 
> dispositivo que he comprado es este: 
> https://es.aliexpress.com/item/4000038850174.html 
> <https://es.aliexpress.com/item/4000038850174.html>
>
> Esta es la información que muestra mi Debian 11.2:
>
> $ lsusb | grep Audio
> Bus 004 Device 003: ID 08bb:2902 Texas Instruments PCM2902 Audio Codec
>
> # dmesg
> [ 1923.797116] usb usb4-port2: disabled by hub (EMI?), re-enabling...
> [ 1923.797141] usb 4-2: USB disconnect, device number 2
> [ 1924.140040] usb 4-2: new full-speed USB device number 3 using ohci-pci
> [ 1924.339006] usb 4-2: New USB device found, idVendor=08bb, 
> idProduct=2902, bcdDevice= 1.00
> [ 1924.339017] usb 4-2: New USB device strings: Mfr=1, Product=2, 
> SerialNumber=0
> [ 1924.339021] usb 4-2: Product: USB PnP Sound Device
> [ 1924.339025] usb 4-2: Manufacturer: C-Media Electronics Inc.
> [ 1924.510998] input: C-Media Electronics Inc.       USB PnP Sound 
> Device as 
> /devices/pci0000:00/0000:00:12.0/usb4/4-2/4-2:1.3/0003:08BB:2902.0002/input/input4
> [ 1924.568551] hid-generic 0003:08BB:2902.0002: input,hidraw0: USB HID 
> v1.00 Device [C-Media Electronics Inc.       USB PnP Sound Device] on 
> usb-0000:00:12.0-2/input3
>
> El problema es que el contenedor no puede sacar el sonido, da este error:
>
> ALSA lib confmisc.c:767:(parse_card) cannot find card '0'
> ALSA lib conf.c:4660:(_snd_config_evaluate) function 
> snd_func_card_driver returned error: No such file or directory
> ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
> ALSA lib conf.c:4660:(_snd_config_evaluate) function snd_func_concat 
> returned error: No such file or directory
> ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name
> ALSA lib conf.c:4660:(_snd_config_evaluate) function snd_func_refer 
> returned error: No such file or directory
> ALSA lib conf.c:5148:(snd_config_expand) Evaluate error: No such file or 
> directory
> ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM default
> [2022-02-18T09:40:36Z ERROR librespot_playback::audio_backend::alsa] 
> Alsa error PCM open ALSA function 'snd_pcm_open' failed with error 
> 'ENOENT: No such file or directory'
> [2022-02-18T09:40:36Z ERROR librespot_playback::player] Could not start 
> audio: Alsa error: PCM open failed
>
> Si hago un alsamixer me da este error:
>
> $ alsamixer
> cannot open mixer: No existe el fichero o el directorio
>
> Tengo que indicarle el dispositivo:
>
> $ alsamixer -c 1
>
> Me sale esto: https://ibb.co/tcJPc89 <https://ibb.co/tcJPc89>
>
> Esto es lo que me muestra aplay:
>
> $ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 1: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
>    Subdevices: 1/1
>    Subdevice #0: subdevice #0
>
> $ aplay -L
> null
>      Discard all samples (playback) or generate zero samples (capture)
> hw:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      Direct hardware device without any conversions
> plughw:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      Hardware device with all software conversions
> default:CARD=Device
>      USB PnP Sound Device, USB Audio
>      Default Audio Device
> sysdefault:CARD=Device
>      USB PnP Sound Device, USB Audio
>      Default Audio Device
> front:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      Front output / input
> surround21:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      2.1 Surround output to Front and Subwoofer speakers
> surround40:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      4.0 Surround output to Front and Rear speakers
> surround41:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> surround71:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
> iec958:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      IEC958 (S/PDIF) Digital Audio Output
> dmix:CARD=Device,DEV=0
>      USB PnP Sound Device, USB Audio
>      Direct sample mixing device
>
> No entiendo lo que sucede, ¿puede que no esté soportado el dispositivo 
> en Debian?
>
> Tengo instalados los paquetes alsa-tools y alsa-utils.
>
> Agradezco cualquier ayuda, no se por donde tirar.
>
> Gracias y un saludo.
>
> --
> Josu Lazkano


Sí, está soportado:
https://linux-hardware.org/?id=usb:08bb-2902

Al parecer, no es "plug'n'play".
Debe iniciar el sistema con la placa insertada.
https://archived.forum.manjaro.org/t/pulseaudio-not-recognizing-usb-soundcard-mixer-audio-codec/97739

JAP