I'm on Kubuntu Precise (12.04) with all the latest updates installed.
lspci, the sound device is:
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40)
I already added
/etc/modules, made sure it's index is 0 in
alsa-base.conf and even blacklisted the other soundcard. Still, a few minutes after logging in (5-10), the sound completely disappears (none at TTYs, even) and nothing helps but a reboot. Any help will be greatly appreciated.