https://bugzilla.kernel.org/show_bug.cgi?id=61941
Bug ID: 61941 Summary: Random GPU lockups/resets on Mobility Radeon HD 3650 with radeon.dpm=1 Product: Drivers Version: 2.5 Kernel Version: >=3.11.0 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: itumaykin@gmail.com Regression: No
Created attachment 109311 --> https://bugzilla.kernel.org/attachment.cgi?id=109311&action=edit lspci -vvv
Hello.
I have 3.11 kernel with radeon.dpm enabled via kernel boot option. Sometimes under unknown circumstances my GPU resets. It happens seldom and randomly during a common desktop workflow: web browsing, document typing, video playback. No games or video benchmarks or any other GPU-eating stuff.
During such lockup my screen turns black, but backlight is still on. After a while image reappears, though it is blurry and after 10-15 seconds my screen is back to normal state completely. Also sometimes after such reset I am able to continue working, but sometimes screen is stuck with one image that appeared after screen restoration and I have to reboot machine to fix this.
Everything else seems to work fine during lockups, for example music is playing without any problems. I can't say for sure, but it looks like this bug happens more often when some video is played in Firefox. (JIC: I don't have Adobe Flash installed.)
My OS is Gentoo amd64 with vanilla kernel 3.11.{0,1}. And this happens with power_dpm_state set to "balanced". I've attached two dmesg outputs after such lockups.
I do understand that it is probably too vague description to fix this and I am ready to provide any other additional info.