Comment 92 for bug 337314

On further exploration, it seems that each level of the channel has its own peculiar noise. The oscillation is at level 0, but the following levels are extremely noisy: 8, 17, 27, 36, 45, 55, 64, 73, 83, 92. It's reproducible to get the noise on each of these levels.

I did not experience this noise before the patch, using the default ALSA that shipped with Jaunty, and the option of snd_hda_intel model=mbp3.