--snip-- HA! i just recognised the alsa hda_intel thread on kernel ml and linus statements on MSI. so my first try has been to disable msi in kernel config make install reboot hmm, starting x and kde brought up a freezed machine like i had sometime before. then i took my kernel config again, re-enabled msi make install reboot BUT with kernel cmd pci=nomsi fantastic, i get clear sound again. not complete on my 5.1 but sound is clear, it doesn't sound like a hurdy gurdy anymore :)) i can live with the fact, that my rear left & right are not working by now. will investigate later on, but first i'll enjoy sound again best regards, marcel ps. steef - thanks for your help ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user