I have a very similar problem with a snd-hda-intel card. It shows up as HD Nvidia. I found, from another post, that by using a vesa or the nv driver instead of the nvidia driver will "magically" bring back sound (unfortunately while crippling video).
-- Low volume, No sound: Intel HDA 82801J (ICH10) https://bugs.launchpad.net/bugs/271519 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