Comment 17 for bug 728161

A fix is coming in kernel 3.3. Takashi Iwai was kind enough to port the bass slave volume fix to his tree, and ping Linus about upstreaming his fix:

http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=blobdiff;f=sound/pci/hda/patch_realtek.c;h=6c8ef04c9c49965bb054f9e7d1efcc5862c9ca3f;hp=a8e82be3d2fc4327a429ea0117ca30f66a114a55;hb=28f6c6b4f1c16c74ee6a3a7230685525b679df7d;hpb=b5bcc189401c815988b7dd37611fc56f40c9139d

This bug should be closed nextrelease if the next Ubuntu is going to have 3.3.