I can also confirm this bug (found earlier in Natty, now also in Oniric using kernel 3.0.0-13-generic). I can confirm this happens when connecting logitec webcams with integrated mic (i.e. 046d:081b or 046d:09a5). In natty, at some stage the microphone would be recognized and available through alsa, not it just wont work.
This bug is also being discussed in the following thread (with a kernel that seems to fix the issue for some devices):
I can also confirm this bug (found earlier in Natty, now also in Oniric using kernel 3.0.0-13-generic). I can confirm this happens when connecting logitec webcams with integrated mic (i.e. 046d:081b or 046d:09a5). In natty, at some stage the microphone would be recognized and available through alsa, not it just wont work.
This bug is also being discussed in the following thread (with a kernel that seems to fix the issue for some devices):
https:/ /bugzilla. redhat. com/show_ bug.cgi? id=729269# c7