Comment 246 for bug 445849

I can't figure out how to assign this bug to Natty also. It's affected by this bug too. I've tested patches from ppa:diwic/ppa and can confirm they solve the rattling problem, but new problems appears. First, the sound checking utility from the pulseaudio settings produces very strange sound (just like vintage phone ring, but I don't think it is conceived). Second, 5.1 audio now plays like stereo, i.e. the front and rear channels are not independent now (I have an ac3 audio for checking this).