[Voyage-linux] Using audio on Alix 3c3

[Russell Lang]

For the benefit of others trying to figure out how to use audio on the Alix 3c3 
board:

First install ALSA.
  remountrw
  apt-get update
  apt-get install alsa-base
  apt-get-install alsa-utils
  remountro
This added about 45M of stuff.  I suspect that I only need a few files from alsa-
utils.

The initial state of the sound mixer is that all volumes are 0% and are muted.  I 
got no audio at all.  This was different to how voyage linux behaved under 
VMware.  To turn up the volume and play sound on the Alix 3c3:
  amixer sset Master 100% unmute
  amixer sset Headphone 100% unmute
  amixer sset PCM 100% unmute
  aplay audio_file.wav

This will allow root to play sounds, but not an ordinary user.
The amixer and aplay commands above will give confusing error messages 
about can't find sound device, rather than saying "don't have permission".
Edit /etc/group and add the user account to the audio group line

I found the easiest way to copy files onto the computer was with scp, dumpging 
them in /tmp.  Then remountrw; cp /tmp/filename .; remountro


Russell Lang                   gsview at ghostgum.com.au
Ghostgum Software Pty Ltd      http://www.ghostgum.com.au/