FC6 failed to detect sound card after kernel upgraded

[Barry Yu]

Fresh installation of FC6 upgraded kernel from 2.6.18-1.2798.fc6 to 
2.6.20-1.2952.fc6, and the sound card detection cannot detect sound card 
- And mplayer/Xine/and other sound players won't work at all. If to boot 
with previous kenel then the sound will work again. My sound card is SiS 
7012 built on motherboard in a Sony Vaio desktop.