Comment 36 for bug 147682

I have a Latitude D630 so I don't know if it applies to you.
What I did is to use the
options snd-hda-intel model=5stack
line in the /etc/modprobe.d/alsa-base file.

I still have the problem of the volume going automatically up but my microphone is functioning ok.
I still did not manage to make my soundcard fully functional without bugs.
If there is anyone having managed it I would really appreciate it to learn how :)