Created attachment 114502 [details]
/sys/class/drm/card0/error

Linux xxx 3.18.9-200.fc21.x86_64 #1 SMP Mon Mar 9 15:10:50 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

After booting, I try to resize xfce4-terminal from 80x25 -> 80x80 (click and drag)
 1. xfce4-terminal freezes in the middle of dragging (for about 2 seconds.)
 2. Then I try again to continue dragging.
 3. xfce4-terminal freezes again (for about 2 seconds)
 4. Then the screen resets (flickers) and then resizing the terminal works
 5. But google-chrome now does not respond to any user interaction

[  343.937422] [drm] stuck on render ring
[  343.941101] [drm] GPU HANG: ecode 0:0x00a06c35, in Xorg.bin [1187], reason: Ring hung, action: reset
[  343.941132] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[  343.941141] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[  343.941149] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[  343.941154] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[  343.941158] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  353.943180] [drm] stuck on render ring
[  353.946907] [drm] GPU HANG: ecode 0:0x00b56f26, in Xorg.bin [1187], reason: Ring hung, action: reset
[  353.947045] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast, banning!