Description of problem: My sound card on a Toshiba A105 was working fine on a 2.6.20, but 2.6.22 broke it. Google told me setting the module parameter "model=auto" would solve this, and it did :) Now the bug is, model=auto should be the default Version-Release number of selected component (if applicable): Advanced Linux Sound Architecture Driver Version 1.0.14 (Thu May 31 09:03:25 2007 UTC). How reproducible: Every time Steps to Reproduce: 1. Boot 2.6.22.4-45.fc6 (or previous 22 kernels) 2. Play any sound, it doesn't work! Fix: alias snd-card-0 snd-hda-intel options snd-card-0 model=auto It's weird why model=auto is NOT the default, and it's boggling, what would be the default for the module! One would imagine, it would be "auto", even alsa docs says model=auto is the default, but obviously it is not!
Aha, so this is a bug in alsa-drivers. That should be fixed for all distros so please file a bug at ALSA project (https://bugtrack.alsa-project.org/alsa-bug/) and they should fix that in the new drivers release. Thanks.