Comment 7 for bug 871611

Okay, I did a fresh install of Oneiric on my netbook, installed the DKMS packages, added "options snd-hda-intel model=auto" to alsa-base.conf file, rebooted my computer, and the situation is now different: when I plug the input jack, I get the sound in my headphones but when I unplug it, the sound from my netbook built-in speakers is very low, almost imperceptible. So, if I run alsamixer, I can see that there's a Speaker fader muted when a jack is plugged in but when I unplug it, the fader doesn't return to its previous state (full volume) and stays somewhere close to zero. Also, the "cat /sys/module/snd_hda_intel/parameters/model" command says "auto,(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)".