Comment 3 for bug 290505

I tried using some of the quirks to specify the card by adding (eg) this to /etc/modprobe.d/alsa-base:

options snd-hda-intel model=6stack-digout

I tried 6stack-digout, dell-3stack, 5stack, dell-bios (which is supposedly the default), auto.

Since the BIOS reports that the card is actually a SigmaTel 9205 (Ubuntu is using SigmaTel 9208 codecs), I also tried dell-m42, dell-m43, dell-m44.

To be sure it was applied, I rebooted completely after each change.

But none of the options made any difference - there is still no digital sensitivity control.

I also tried:

options snd-hda-intel probe_mask=1

but this disabled audio completely.