Ubuntu
alsa-driver package

  1. Bug #440251
  2. Comment #12

Comment 12 for bug 440251

Revision history for this message
Paweł T. Jochym (jochym) wrote : Re: Internal microphone does not work

I have the same issue with the same hardware. Running latest (21/10) updated karmic beta.
The external jack microphone works fine.
I have noticed one thing though. If I run gnome alsa mixer with working microphone I get picture like the first screenshot:
the mic and capture channels are switched on recording and PA control shows signal from the ext mic.
When I switch internal Mic checkbox I get the second screen: BOTH mic & Capture channels are switched off (rec) and
in PA sound control the Mute checkbox appears. There is no signal from the internal mic. If I switch capture rec on in gnome-alsamixer (third screen) there is still no signal in PA control and no signal from the mic and the Mute check stays put. If I unmute the PA control in the right window the Internal mic is switched off and mic switched on - back to the first screen situation.
It is the same if I put model=thinkpad in alsa-base.conf or not.