[Bug 108966] New: drm i915 "GPU HANG" in kernel-4.19.7 on starting X

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108966

            Bug ID: 108966
           Summary: drm i915 "GPU HANG" in kernel-4.19.7 on starting X
           Product: DRI
           Version: unspecified
          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: wjfgb at mypostoffice.co.uk
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 142745
  --> https://bugs.freedesktop.org/attachment.cgi?id=142745&action=edit
Xorg log

On starting X windows or very soon after the keyboard and mouse response
was slow and got this in /var/log/messages :-

Dec  7 05:52:23 localhost kernel: [drm] GPU HANG: ecode 5:0:0xeeccffff, in Xorg
[784], reason: hang on rcs0, action: reset
Dec  7 05:52:23 localhost kernel: [drm] GPU hangs can indicate a bug anywhere
in the entire gfx stack, including userspace.
Dec  7 05:52:23 localhost kernel: [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
Dec  7 05:52:23 localhost kernel: [drm] drm/i915 developers can then reassign
to the right component if it's not a kernel issue.
Dec  7 05:52:23 localhost kernel: [drm] The gpu crash dump is required to
analyze gpu hangs, so please always attach it.
Dec  7 05:52:23 localhost kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Dec  7 05:52:23 localhost kernel: i915 0000:00:02.0: Resetting chip for hang on
rcs0

The system was just about usable but very slow. I shut X down and started it
up again and it was still slow. It was all ok again after a full reboot.

I had installed kernel-4.19.7 the previous day and had booted and run with
kernel-4.19.7 four times during the day without any problems.

------------------------------------
Hardware:
  Asus P7H55-M SI with Intel Core i5 processor
  and Integrated Graphics [i915 driver].

Distro: Slackware-14.2, but with newer kernel.
------------------------------------

Will attach Xorg.0.0.log file and error file.

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