It seems like alsa is not recognizing your soundcard model. I had the same problems on both my systems and solved them with the instructions on the page below:
https://help.ubuntu.com/community/HdaIntelSoundHowto#line-81 In short you need to specify your soundcard model manually. Hope this helps :-) -- No audio after hibernation https://bugs.launchpad.net/bugs/223457 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