I've just built a new machine, and expected problems with the onboard soundcard, and also have problems with the onboard NIC, but that's another problem, which is resolved by installing my last remaining realtek 8139 PCI card.
Anyway the mobo is an Asus M2N-X Plus NVIDIA GeForce 6100/nForce 430, and the Southbridge (which appears to handle allsorts of stuff) is MCP61.
the specs for the soundcard from the Asus site are below. ALC662 6-Channel High Definition Audio Azalia CODEC Support Jack-Sensing, Enumeration, Multi-streaming S/PDIF out on back I/O port
This is using the Fedora 8 distro, which has alsa driver 1.0.15, and is probably a bit old.
The card is not detected at bootup, but I did a modprobe snd-hda-intel, using various model options. the modules were loaded, but a cat /proc/asound/cards showed "no soundcards detected"
I don't want to waste too much time on this onboard card, and will probably buy a cheap well supported card, just to get some sounds on this new machine. All the same I've run the alsa-info.sh script, and the link is below.
Any comments, as always welcome.
Btw: My other machines use Audigy2 soundblaster (emu10k1) on the first machine, and Ensoniq (ens1371) on the other machine, and no problems with these cards at all. I cannot repeat my opinions/thoughts about hda-intel cards.
Thanks for all your work you folks.
Nigel.