Lenovo Thinkpad T400s. Microphone volume was fine on 2.6.34. Using 2.6.35, even when maxing out the recording volume slider, the volume is much too low.
Created attachment 29482 [details]
Output of alsa-info
Did you try model=thinkpad?
I did now, and that helps. Thanks for your help.
Takashi, what is the status here?
This was already fixed in 22.214.171.124.