https://bugzilla.kernel.org/show_bug.cgi?id=34802
Summary: [radeon] Screen blinking when reclocking (especially with dynpm power method) Product: Drivers Version: 2.5 Kernel Version: 2.6.39 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@kernel-bugs.osdl.org ReportedBy: arzavt@gmail.com Regression: No
It's always happen when clocks changes. In this moment I observe a colored vertical lines during 1 second. When I change power method or power profile manually it's happens one time too. The lines like this: http://radeon.koolfy.be/wp-content/uploads/2011/03/garbage.jpg
$ lspci | grep -i vga 01:00.0 VGA compatible controller: ATI Technologies Inc Madison [Mobility Radeon HD 5000 Series]