Comment 9 for bug 363721

I can confirm that at least my Front Speaker (Headphones) now work with the change suggested by emreakbas (thanks!).

Using "options snd-hda-intel model=ref" in "/et/modprobe.d/alsa-base.conf" then rebooting.

The expectedly correct "options snd-hda-intel model=dell-e520" does not work, which is strange, as this is a Dell E520 workstation.