Comment 44 for bug 109882

Ok, doing some digging upstream, I'm positively sure that this commit in alsa
repo fixes the bug. Though I've yet to try it myself, there is no other commit
upto now which seems to have fixed the bug.

Commit - http://hg.alsa-project.org/alsa-kernel/rev/2c9a8e76669e

The complete revision history of patch_realtek.c can be seen at
http://hg.alsa-project.org/alsa-kernel/log/3a300e020eca/pci/hda/patch_realtek.c