I am getting this bug about every once a week - sometimes taking document progress with it. I made a video of how it looks for me.
dmesg brought up the following errors: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung [drm:i915_reset] *ERROR* i915_do_wait_request returns -11 (awaiting 5337284 at 5337277, next 5337285) [drm:i915_reset] *ERROR* Failed to reset chip. show_signal_msg: 15 callbacks suppressed compiz[1544]: segfault at 8 ip b712b1b1 sp bfac51e0 error 6 in libc-2.13.so[b7016000+15a000] [drm:drm_mode_getfb] *ERROR* invalid frambuffer id Then I tried to ressurect unity-window decorator unity-window-decorator --replace&disown [1] 7402 (unity-window-decorarotr:7402): Gtk-WARNING **: cannot open display: _ I was also using java applications at that time, which also sometimes crash unity-window-decorator but most of the times, just the window- borders and decorations crash and I can recover / replace them with above command. Not when it flashes like in the video though... ** Attachment added: "Short clip of the desktop border and programs flashing issue" https://bugs.launchpad.net/ubuntu/+source/nux/+bug/733192/+attachment/2177994/+files/PICT0769.MOV -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/733192 Title: compiz crashed with SIGSEGV in brw_upload_state() To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/733192/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs