I did a clean install of 12.10. When I open Sound Settings in gnome the only device in the list is "Dummy Output", and sound is not working.
Sound worked fine out of the box in 12.04.
I ran alsamixer, it says my card is "HDA Intel", and chip is "Realtek ALC880". The alsamixer playback output was set to mute at first, unmuting did not fix.
I checked out the info at unixmen as suggested on a similar question; I've done everything there except installing the ubuntu audio dev team driver. Should I try install this?
Edit: I've been reading the sound troubleshooting guide.
It looks like Ubuntu is finding my audio device correctly.
mike@wucade:~$ lspci -v | grep -A7 -i "audio" 00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 03) Subsystem: Albatron Corp. Device 2668 Flags: bus master, fast devsel, latency 0, IRQ 40 Memory at d01c0000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel
Still stuck as to why this isn't working.