As part of my on-going mythtv saga, I've been having an intermittent problem with my integrated sound card. It doesn't always get detected. I'm not quite sure where the problem is coming from. Basically, the sound card doesn't always get created under linux, sometimes it decides that my tv capture card is a much better sound card. I'm not quite sure what is to blame. Last time it failed, I tried running "MAKEDEV sound", which did load a bunch of drivers, but did not add the card under the /dev directory. So today I loaded the newest ALSA drivers. We'll see if they help at all.
Update: 9/3/2006: Updating the newest alsa drivers seems to have helped.