Comment 2 for bug 772276

This problem also effects my system.

Internal speakers refuse to work.
Microphone doesn't show any input, although it was working when I installed Natty (indicating that it was an update that caused this error).

I'm going to go ahead and confirm this, because I know something is wrong with this, and I'm not seeing any duplicates that match this. However, someone may find a bug that better fits as a duplicate to move this to.

Until then, to be on the safe side, run "apport-collect 772276" in a terminal to collect debugging information for the developers to diagnose any problems related to this bug report.