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Lost all sound

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http://forums.opensuse.org – Hi! Sound was working perfect. i run OpenSUSE 11.2 w/KDE 4.3.4 Its a laptop Dell Latitude D830. lspci show: 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02) What happens was that i "mute" sound with the mute-button on the laptop. Then i let it stay muted and after i rebooted laptop i discover that sound was still muted, so now i "unmute" the sound but the sound doesn't come back. If i execute "alsaconf" and then a windows pops up and tell me that KDE has detected a soundcard that can be removed and ask me to confirm KDE to forget permanently this card. This is the Intel-controller and of course i don't want KDE to forget about this card. I click on "manage units" and two sound-devices shows up in the list; Intel controller and PulsAudio. The Intel-controller is deactivated(grayed out) and can't be managed. So what happens here? How can i reactivate my Intel Sound-device? RS (Distributions)