[   719.618] (EE)
[   719.618] (EE) Backtrace:
[   719.618] (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x58f186]
[   719.618] (EE) 1: /usr/bin/X (0x400000+0x192fc9) [0x592fc9]
[   719.618] (EE) 2: /usr/lib/libpthread.so.0 (0x7faf7522e000+0xf4b0) [0x7faf7523d4b0]
[   719.618] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6f5cf000+0xb2b7f) [0x7faf6f681b7f]
[   719.618] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6f5cf000+0xb624a) [0x7faf6f68524a]
[   719.618] (EE) 5: /usr/bin/X (WakeupHandler+0xaa) [0x43b89a]
[   719.619] (EE) 6: /usr/bin/X (WaitForSomething+0x1c7) [0x58c5b7]
[   719.619] (EE) 7: /usr/bin/X (0x400000+0x36951) [0x436951]
[   719.619] (EE) 8: /usr/bin/X (0x400000+0x3ad16) [0x43ad16]
[   719.619] (EE) 9: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7faf73e99000]
[   719.619] (EE) 10: /usr/bin/X (0x400000+0x250fe) [0x4250fe]
[   719.619] (EE)
[   719.619] (EE) Segmentation fault at address 0x31600000390
[   719.619] (EE)
Fatal server error:
[   719.619] (EE) Caught signal 11 (Segmentation fault). Server aborting
[   719.619] (EE)
[   719.619] (EE)
Please consult the The X.Org Foundation support
	 at http://wiki.x.org
 for help.
[   719.619] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[   719.619] (EE)
[   719.619] (II) AIGLX: Suspending AIGLX clients for VT switch
[   719.619] sna_leave_vt
[   719.619] sna_mode_reset
[   719.619] sna_crtc_disable: disabling crtc [5, pipe=0]
[   719.619] sna_crtc_force_outputs_off(pipe=0), currently? 0
[   719.619] sna_output_dpms(LVDS1:13): dpms=3 (current: 0), active? 1
[   719.619] sna_output_backlight_get(LVDS1) level=4438, max=4438
[   719.619] sna_output_dpms: saving current backlight 4438
[   719.619] sna_output_backlight_set(LVDS1) level=0, max=4438
[   719.619] sna_backlight_uevent()
[   719.619] sna_backlight_uevent: probing backlights for changes
[   719.897] sna_crtc_disable_shadow: disabling for crtc 5
[   719.897] sna_mode_disable_shadow
[   719.897] wait_for_shadow: flags=0, flips=1, handle=53, shadow=8
[   719.897] _kgem_bo_destroy: handle=8, proxy? 0
[   719.897] __kgem_bo_destroy: handle=8, size=4325376
[   719.897] kgem_bo_move_to_scanout: moving 8 [fb 30] to scanout cache, active? 0
[   719.897] _kgem_bo_destroy: handle=52, proxy? 0
[   719.897] __kgem_bo_destroy: handle=52, size=4325376