[Alsa-user] PCM2902 USB device in Debian

[Josu L. <jos...@gm...>]

Hello,

I buy a cheap USB audio device:
https://es.aliexpress.com/item/4000038850174.html

This is the device info:

$ 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

The problem is that my Spotify docker container can not open the device:

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

If I execute "alsamixer" it doesn't found the device:

$ alsamixer
cannot open mixer: No existe el fichero o el directorio

I need to configure with device parameter:

$ alsamixer -c 1

This is the output: https://ibb.co/tcJPc89

This is the aplay info:

$ 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

I am using it in a Debian 11.2 server with alsa-tools and alsa-utils
packages.

I am missing some configuration?

Could you help please?

Best regards.

-- 
Josu Lazkano