ubuntu 9.10 sound problem

My sound card works fine in Ubuntu 8.04 but after I changed to 9.10, the sound card doesn't work at all. I tried to look for driver on the internet but I couldn't find anything, what can I do now? oh yea my motherboard is asus p5e.

偏好設定 -> 聲音

入面個 "輸入/輸出" 係咩? 另外, 會唔會唔小心靜音左?