[Bug 108614] New: Random system freezes. GPU hang on rcs0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108614

            Bug ID: 108614
           Summary: Random system freezes. GPU hang on rcs0
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: gustavo.gimpel at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 142307
  --> https://bugs.freedesktop.org/attachment.cgi?id=142307&action=edit
GPU Crash Dump

Using Kubuntu 18.10 on Kernel version: 4.18.0-10-generic

While using the system, random freezes are occuring, lasting from 5 to 20
seconds, mouse keeps working but everything else is unresponsive. KWin crashes
and restarts, and the notification pops: "KWin: Desktop effects were restarted
due to a graphics reset". I'm having around 5-6 crashes on a 10 minute period.

Running dmesg I get:

[  920.806022] [drm] GPU HANG: ecode 6:0:0x87e8effd, in chrome [4579], reason:
hang on rcs0, action: reset
[  920.806024] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  920.806024] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  920.806025] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  920.806025] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  920.806026] [drm] GPU crash dump saved to /sys/class/drm/card0/error


and a bunch of:

[  920.806092] i915 0000:00:02.0: Resetting chip for hang on rcs0
[  976.832401] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1049.792379] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1085.792388] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1093.792021] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1101.792036] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1171.840381] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1198.784395] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1213.824390] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1227.808413] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1235.808051] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1243.808052] i915 0000:00:02.0: Resetting chip for hang on rcs0
[ 1293.792374] i915 0000:00:02.0: Resetting chip for hang on rcs0


Tried to upgrade from mesa 18.2.2 to 18.2.3 but didn't solve the problem.

The GPU Crash dump is attatched.

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