[Bug 108106] New: Graphic corruptions and GPU hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108106

            Bug ID: 108106
           Summary: Graphic corruptions and GPU hang
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: L.Bonnaud at laposte.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Hi,

my system is running Ubuntu and since around version 18.04 it is plagued with
graphic corruption problems.

I use Plasma desktop with or without compositing and after a few minutes or
hours, I start to see graphic corruptions.

I upgraded my system to Ubuntu 18.10 in the hope that newer Xorg and Mesa would
help, but the problem remains.

And today I got a GPU hang:

[ 1746.029214] [drm] GPU HANG: ecode 6:0:0xff800fbf, in kwin_x11 [2686],
reason: hang on rcs0, action: reset
[ 1746.029216] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 1746.029216] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 1746.029217] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 1746.029217] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 1746.029218] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 1746.029252] i915 0000:00:02.0: Resetting chip for hang on rcs0

so here is my report with the required info:

 - uname -a
Linux vougeot 4.18.11-041811-generic #201809290731 SMP Sat Sep 29 11:33:39 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux

This is the mainline kernel provided by Ubuntu:
http://kernel.ubuntu.com/~kernel-ppa/mainline/

 - Linux distribution: Ubuntu 18.10 
Xorg 1.20.1-1ubuntu2
Mesa 18.2.1-1ubuntu1

 - Machine or mother board model:
from dmidecode:
System Information
        Manufacturer: Dell Inc.
        Product Name: Latitude E6520
        Version: 01
BIOS Information
        Vendor: Dell Inc.
        Version: A19
        Release Date: 11/14/2013
Base Board Information
        Manufacturer: Dell Inc.
        Product Name: 0NVF5K
        Version: A01

from /proc/cpuinfo:
model name      : Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz

 - Display connector: internal LVDS panel

 - dmesg and other attachment to follow below...

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