Today i tried to put another soundcard into my Desktop machine, because i wanted to test Arif Abdullah’s sound patches.
The Mainboard an “Asus K8V-Deluxe EAY” has a VIA AC97 Soundcodec and i added a Creative CT4810. After booting only the Creative card was detected.
Removing the Creative Card, the VIA card is detected again.
It looks like Asus automatically disables the onboardsound in case there is another soundcard plugged in.