Created attachment 120662 [details]
full dmesg after incident
I was doing some ordinary browsing activity and the screen froze for a few seconds, before returning to normal. When I checked dmesg I found:
[125107.835253] [drm] GPU HANG: ecode 6:-1:0x00000000, reason: Kicking stuck semaphore on render ring, action: continue
[125107.835256] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[125107.835257] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[125107.835257] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[125107.835258] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[125107.835259] [drm] GPU crash dump saved to /sys/class/drm/card0/error
Intel HD 3000 graphics on an i7-2760QM. Using Fedora 23, kernel and driver versions:
Attached below: full dmesg output, Xorg log, crash dump.
Created attachment 120663 [details]
crashdump from sysfs
Created attachment 120664 [details]
*** This bug has been marked as a duplicate of bug 54226 ***