In my case, following https://help.ubuntu.com/community/HdaIntelSoundHowto and installing latest alsa version solved my problem
-- [alc850] sound not working (Intel ICH7; Ubuntu 8.10; ALSA) https://bugs.launchpad.net/bugs/291376 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs