I have an Asus M2N-SLI Deluxe running FC8 all patches applied.
Sometimes the sound chip has been detected, sometimes not.
With the current kernel 2.6.23.14-107.fc8 it has never been detected.
The error message is:
hda-intel: Error creating card!
HDA Intel: probe of 0000:00:06.1 failed with error -12