Bug 98287

Created attachment 127347 [details]
The ..config for my linux kernel

If I hibernate from the console, thaw, and switch between the console
and X, the gpu hangs itself. The machine becomes unresponsive except
for the power button.

    21:12:16  kernel: [drm] GPU HANG: ecode 8:0:0x0f71ffff, in Xorg [2047], reason: Hang on render ring, action: reset
    21:12:16  kernel: [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
    21:12:16  kernel: [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
    21:12:16  kernel: [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
    21:12:16  kernel: [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
    21:12:16  kernel: [drm] GPU crash dump saved to /sys/class/drm/card0/error
    21:12:16  kernel: drm/i915: Resetting chip after gpu hang

I tried to bisect, and found

  commit 068715b922a6f87c454cdfa15bb8049d2076eee6
  Author: Chris Wilson <chris@chris-wilson.co.uk>
  Date:   Thu Aug 18 17:17:11 2016 +0100

    drm/i915/cmdparser: Add the TIMESTAMP register for the other
    engines

as the first bad commit, i.e with a gpu hang after hibernation. This
sseems spurious, reverting this commit didnt not help.

This is a Lenoveo T450s with Broadwell-U Integrated Graphics. I attach
my .config and /sys/class/drm/card0/error.

    Regards,
    Martin