Comment 11 for bug 459982

I just tested 'linux-backports-modules-alsa-karmic-generic' on a fresh xubuntu. It seems almozavr's suggestion and installing l-b-m-a-k-g have exactly the same effect.

With all in- and outputs at their maximum the external microphone works, but it's more noisy. The internal microphone works too, but it's to soft to be usefull. When I press my lips against the screen edge and speak with a normal volume skype barely pics up any sound (not exactly how you'd want to use a internal microphone anyway). I used skype to test because there's no way to hear the mic input feedback directly by un-muting mic out in alsa anymore.

I guess when I tried l-b-m-a-k-g before I just didn't notice it was working (very soft).