I've went through some information from: http://wiki.archlinux.org/index.php/ATI https://bugzilla.kernel.org/show_bug.cgi?id=15626 https://bugzilla.kernel.org/show_bug.cgi?id=14801
and kernel parameter pci=nomsi does not help but kernel parameter radeon.modeset=0 does help. So it looks like KMS does not work well with my card. ** Bug watch added: Linux Kernel Bug Tracker #15626 http://bugzilla.kernel.org/show_bug.cgi?id=15626 ** Bug watch added: Linux Kernel Bug Tracker #14801 http://bugzilla.kernel.org/show_bug.cgi?id=14801 -- Running firefox causes problem with screen refreshing https://bugs.launchpad.net/bugs/580984 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp