[Alsa-user] Problems with external microphone with STAC9228

[Matthias B. <de...@co...>]

Hi everybody,

on my Dell Inspiron 1525 with Sigmatel STAC9228 audio chip I have a small but 
rather inconvenient problem. Everything except the microphone jack in front 
of the notebook seems to work correctly. The external microphone of my 
headset records only noise, when I use it in Linux. In Windows everything 
works fine (besides the crude interface of the Sigmatel sound driver...), so 
the mircrophone itself is not broken.

Here's the output of the "alsa-info" script:
http://pastebin.ca/1093819

Do you have any ideas, what I can try to get the mic working again?

Best regards

Matthias