[Bug 99046] New: GPU HANG: ecode 8:2:0xc9835ff6, in Xorg [697], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99046

            Bug ID: 99046
           Summary: GPU HANG: ecode 8:2:0xc9835ff6, in Xorg [697], reason:
                    Ring hung, action: reset
           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: j1102681 at mvrht.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 128404
  --> https://bugs.freedesktop.org/attachment.cgi?id=128404&action=edit
Dump of the GPU hang

When I woke up my laptop from suspension rarely I get a gpu hang.
Just to give an approximative idea about the frequency, maybe this happen once
every fifty suspensions.

The dmesg says:
[28377.998735] [drm] stuck on blitter ring
[28377.999292] [drm] GPU HANG: ecode 8:2:0xc9835ff6, in Xorg [697], reason:
Ring hung, action: reset
[28377.999294] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[28377.999295] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[28377.999296] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[28377.999297] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[28377.999298] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[28378.707379] [drm:gen8_do_reset [i915]] *ERROR* blitter ring: reset request
timeout
[28378.707389] drm/i915: Resetting chip after gpu hang
[28378.707405] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -5
[28383.775909] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28384.275334] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28384.772331] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28385.267864] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28385.785094] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28609.499571] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28610.057585] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28610.608001] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28611.143264] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28611.703511] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5
[28612.242389] [drm:intel_lr_context_deferred_alloc [i915]] *ERROR* ring create
req: -5

I have a laptop with an Intel HD Graphics 5500 and the kernel 4.4.19-1

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