[Bug 98288] New: linux 4.9-r1: gpu hangs after hibernation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98288

            Bug ID: 98288
           Summary: linux 4.9-r1: gpu hangs after hibernation
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: ziegler at uni-freiburg.de
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

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 at 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

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