[Bug 111790] New: i915 0000:00:02.0: GPU HANG: ecode 7:0:0x00000000, hang on rcs0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111790

            Bug ID: 111790
           Summary: i915 0000:00:02.0: GPU HANG: ecode 7:0:0x00000000,
                    hang on rcs0
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: not set
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: mihai.dontu at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 145476
  --> https://bugs.freedesktop.org/attachment.cgi?id=145476&action=edit
the card error state

I use synergy to control my desktop from my laptop, and simply moving the mouse
from the remote screen to the local one, triggered this:

Sep 23 22:46:30 mdontu-l kernel: DMAR: DRHD: handling fault status reg 3
Sep 23 22:46:30 mdontu-l kernel: DMAR: [DMA Write] Request device [00:02.0]
fault addr 94f99000 [fault reason 05] PTE Write access is not set
Sep 23 22:48:51 mdontu-l kernel: i915 0000:00:02.0: GPU HANG: ecode
7:0:0x00000000, hang on rcs0
Sep 23 22:48:51 mdontu-l kernel: [drm] GPU hangs can indicate a bug anywhere in
the entire gfx stack, including userspace.
Sep 23 22:48:51 mdontu-l kernel: [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
Sep 23 22:48:51 mdontu-l kernel: [drm] drm/i915 developers can then reassign to
the right component if it's not a kernel issue.
Sep 23 22:48:51 mdontu-l kernel: [drm] The gpu crash dump is required to
analyze gpu hangs, so please always attach it.
Sep 23 22:48:51 mdontu-l kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Sep 23 22:48:51 mdontu-l kernel: i915 0000:00:02.0: Resetting chip for hang on
rcs0

It has happened three or four times before and only with Linux 5.3.x. Linux 5.2
did not exhibit this behaviour. I use suspend to RAM quite often. Maybe that
plays a role. Anyway, it does not bother me. The screen is frozen for a few
seconds and then everything is back to normal.

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