[linux-audio-user] usb audio

[christopher cuse]

Hello,

I have an up2date red hat 8.0 install with external usb audio device
(extigy). I compiled, installed, and loaded alsa modules; the following issues are present:

[root at drs0 alsa]# alsactl store
alsactl: get_control:194: Cannot read control '2,0,0,Digital In Playback
Source,0': Invalid argument


[root at drs0 alsa]# play /usr/share/sounds/phone.wav
sox: Unable to sync dsp

[root at drs0 alsa]# amixer contents
<snip>
numid=3,iface=MIXER,name='Digital In Playback Source'
  ; type=ENUMERATED,access=rw---,values=1,items=2
  ; Item #0 'PCM'
  ; Item #1 'Input 1'
amixer: Control default element read error: Invalid argument

numid=23,iface=MIXER,name='Digital In Playback Source',index=1
  ; type=ENUMERATED,access=rw---,values=1,items=2
  ; Item #0 'Mixer'
  ; Item #1 'PCM'
amixer: Control default element read error: Invalid argument
<snip>


This appears to systemic problem 

May  7 16:00:52 drs0 kernel: ALSA ../alsa-kernel/usb/usbaudio.c:1869: 3:3:1 : format type 2 is not supported yet
May  7 16:00:52 drs0 kernel: ALSA ../alsa-kernel/usb/usbaudio.c:2019: 3:3:1 : invalid FORMAT_TYPE desc
May  7 16:00:52 drs0 kernel: ALSA ../alsa-kernel/usb/usbaudio.c:1869: 3:3:2 : format type 3 is not supported yet

from an unsupported pcm type.

has anyone worked around this?

Any ideas, comments, suggestions are *greatly* appreciated!

Cheers

Christopher CUSE