EVERYTHING WORKING YEYYYYYYYY!!!
I have an ACER 5236-5322 running ubuntu 9.10 Karmic. At first audio came out both through the notebook's speakers and the headphones. I edited /etc/modprobe.d/alsa-base.conf.
The last line was:
options snd-hda-intel power_save=10 power_save_controller=N
I added model=auto and forced alsa reload and it was working perfectly!! Also, the camera works incredibly well. The microphone wasn't working, I went to sound options, selected the only device listed and the "microphone 2" input source.