I had something odd happen to one of my installs. I logged in and had no kmix icon in the system tray. I had to run alsaconf in su root mode and it popped back to life. Must have been a glitch in the matrix or something.
Exactly the same thing on 2010.1 install, yesterday, after first reboot since the last upgrade. I'm running upgrades as they appear in update-notifier, set for 8 hr checks, using the PASS server.
No kmix icon in tray, but System Activity
app showed it as running. Killed that and tried to restart kmix from a terminal. No errors
reported, same symptoms. Killed kmix, in System Activity, ran alsaconf
, then restarted kmix. Icon now appears in tray, all settings seem proper, and sound is restored.
The glitch in the matrix is infectious.