Created attachment 140755 [details]
drm_card0_error

Gpu hang, random screen tearing
Steps: looks random
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linux 4.4.0-130-generic x86_64 Ubuntu Trusty 
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00:00.0 Host bridge: Intel Corporation Device 5904 (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Device 5916 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Device 1903 (rev 02)
00:08.0 System peripheral: Intel Corporation Sky Lake Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation Device 9d2f (rev 21)
00:14.2 Signal processing controller: Intel Corporation Device 9d31 (rev 21)
00:16.0 Communication controller: Intel Corporation Device 9d3a (rev 21)
00:17.0 SATA controller: Intel Corporation Device 9d03 (rev 21)
00:1c.0 PCI bridge: Intel Corporation Device 9d14 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Device 9d15 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Device 9d21 (rev 21)
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
00:1f.4 SMBus: Intel Corporation Device 9d23 (rev 21)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59)

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dmesg related:
 [drm:i915_hangcheck_elapsed [i915_bpo]] *ERROR* Hangcheck timer elapsed... render ring idle
 [drm] stuck on blitter ring
 [drm] GPU HANG: ecode 9:1:0xfffffffe, in Xorg [1245], reason: Engine(s) hung, action: reset
 [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
 [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
 [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
 [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
 [drm] GPU crash dump saved to /sys/class/drm/card0/error
 drm/i915: Resetting chip after gpu hang
 [drm] RC6 on