Comment 4 for bug 346170

I should note that with this patch, the model option is imac91, which is automatically detected if /proc/asound/card0/codec#0 contains Subsystem Id: 0x106b4900

I should also note, that in my case, there was no sound at all, either from the headphone jack or the built in speakers. I'm guessing sound from the headphone jack would have worked in Intrepid and possibly earlier versions of Jaunty, since I believe those versions of alsa did not contain the clause for this model to use the 883/888 alc. 882/885 alc is required. One can tell which is being used by the output of aplay -l