https://bugzilla.kernel.org/show_bug.cgi?id=67121 --- Comment #7 from Adrian Knoth <adi@xxxxxxxxxxxxxxxxxxxxx> --- Random observation: high CPU usage "uncripples" the video output. That is: I suspend to RAM, I resume and unplug the AC, causing the screen to be heavily distorted. When I blindly start burnK7 (from Debian's cpuburn package), CPU usage on one of the cores jumps to 100% and I have a wonderful clear and perfect screen. As soon as I terminate burnK7, the corruption is back. (with AC unplugged all the time; of course, plugging the AC back in always fixes the corruption). So it's a power management issue. For some reasons, the radeon driver (or the hardware) is sensitive to CPU power saving states (idle states?) and the presence of an external power supply. And all this only happens with KMS, not with UMS. So is it an ACPI/PM bug? Or DRI? -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
