I think it's problem with alsa. In kernel 2.6.34 alsa modules are in version 1.0.22.1 which works good. In newer kernels alsa is in version 1.0.23 and there are problems with it. I tried also 2.6.36 vanilia kernel, same problem. My hardware is the same - lenovo y530 with HDA Intel.
-- [Lenovo Y530 - Realtek ALC888] Regression from 10.04: No sound with snd_hda_intel model=lenovo-sky https://bugs.launchpad.net/bugs/662009 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