Hello,
This is my first mail to the list, I hope you can help me. I have been talking with people on #alsa, but they couldn't help me, so that's why I'm writing to you.
Well, as lspci says, my Acer Aspire 6930 laptop has an "Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)". With this card, and without adding any mode=... to /etc/modprobe.d/alsa-base, playback works perfectly, but when I plug in headphones, the integrated speakers do not mute. I can mute the speakers muting "front" and "side" and use the headphones, but it should be automatic.
Setting mode=auto makes the headphones, when plugged, mute the speakers. But the problem with this is, that when using the speakers, I only get sound from the speaker that was "front" in the other mode. The microphone does not work in this mode either.
I also tried other modes, including (but not limited to) acer, acer-aspire. I ran alsa-info.sh, here is the URL: http://www.alsa-project.org/db/?f=7910da439e8e190a8c2a6f18167d4879c74881c9
And before I forget, regarding the microphone, if I plug an external one on the microphone plug, I can record. And I tried the internal one on windows, and it works, so I believe it's an alsa problem.
Looking forward to hearing from you!
Emilio