Comment 15 for bug 391114

I found a great guide on the HDA codec:
http://www.kernel.org/pub/linux/kernel/people/tiwai/docs/HD-Audio.html#_codec_probing_problem

After reading it I realised that I experienced a "Codec-Probing Problem": the modem was asigned to the first codec slot while the "real" codec was assigned to the fourth slot. Therefore, I added "probe_mask=8" as an option and now I have sound! Furthermore, the devices in alsa-mixer are correct now: I have a capture device and can select Mic or CD as Input-Source.

However, one problem remains: recording doesn't work! When recording with audacity, the time-slider doesn't move forward but is constantly flickering. And when using GNOME's sound recorder, recording stops immediately after starting it and the app crashes on exit each time. PA's "volume meter" for recording doesn't show anything either. I'm running out of ideas right now...

One note: I had to remove the "model=toshiba" option. When it's enabled, the devices are also messed up within alsa-mixer (although in a different way than without probe_mask=8) and sound doesn't work!

I hope that the "probe_mask" option will help you too! To check if you have a codec-probing problem, look at "/proc/asound/card0/codec* and see if the modem has a lower slot than the soundcard.

Regards