Ubuntu Sound Support

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If sound is not available after installing Ubuntu, perform the following to fix.

Setup

List all soundcards on the system:

$aplay -l

Load the sound mixer and make sure the right channels are not muted. Un-mute all channels and work backwards by muting after sound is working.

$alsamixer

Save the settings in alsamixer by executing the following where 0 is the first sound card (default):

$sudo alsactl store 0

The current user must be in the audio group.  To find out try:

$grep 'audio' /etc/group

Add the appropriate username (find out using $whoami) like so:

$audio:x:29:mythtv,ubuntu,persabi

References

  • http://ubuntuforums.org/showthread.php?t=205449