[ubuntu] Intel 82801H sound problem

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http://ubuntuforums.org – Hey everyone! I have a weird problem with my Toshiba L40 notebook! I installed Ubuntu 9.10 yesterday, and I get weird sounds when I start playing music, or some sound starts. My soundcard is Intel 82801H, lspci says: 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) When I get new message on MSN (it indicates a sound), or I start playing a video on youtube, or an mp3, a short "popping, raspy" sound is audible. It is very annoying. This weird sound is very short, and it occurs only in the beggininng of a new sound event, or when I adjust the volume with the control on the panel. Do you guys have any suggestions? p.s.: sorry for my english :) (Hardware)