I have an ASRock 939Dual-SATA2 with an ALi M5455 onboard audio card. I've tried several different things to get it working, but nothing has gotten any sound so far. Kernel is 2.6.21-gentoo-r4
Relevant part of lspci:
00:08.0 Multimedia audio controller: ALi Corporation M5455 PCI AC-Link Controller Audio Device (rev 20)
AC'97 1 does not respond - RESET
AC'97 1 access is not valid [0xffffffff], removing mixer.
Unable to initialize codec #1
intel8x0_measure_ac97_clock: measured 54884 usecs
intel8x0: clocking to 48000