[Pkg-alsa-devel] Bug#487719: alsamixer: function snd_ctl_open failed for default: No such device

[peter at easthope.ca]

This machine has an audio chip on the mainboard and two 
USB audio adapters.

peter at dalton:~$ ls /dev/audio
ls: cannot access /dev/audio: No such file or directory
peter at dalton:~$ ls /dev/snd
by-id    controlC0  controlC2  pcmC0D0p  pcmC1D0c  pcmC2D0c  seq
by-path  controlC1  pcmC0D0c   pcmC0D1c  pcmC1D0p  pcmC2D0p  timer

peter at dalton:~$ alsamixer
cannot open mixer: No such device
peter at dalton:~$ alsamixergui
Dialgue window shows, "alsamixer: function snd_ctl_open failed for default: No such device".
Ie. the message which started this thread.

I expect the problem is in detection or identification of sound devices. 
Here, any PCI bus machine with more than one sound device has 
always manifested unreliable identification of sound devices.  
Similar to the problem of identifying multiple ethernet adapters 
before udev could sort them.  Order of appearance at boot up is 
just not a reliable means of identifying devices.

If anyone has a promising suggestion or question, I'm happy to work on 
troubleshooting.

Regards,                       ... Peter E.



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