[Bug 106859] New: Graphic corruptions and GPU hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106859

            Bug ID: 106859
           Summary: Graphic corruptions and GPU hang
           Product: DRI
           Version: DRI git
          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: L.Bonnaud at laposte.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Hi,

I have been using pretty much all mainline Linux kernel versions for several
years and most of them were OK with respect to my SandyBridge CPU/GPU, up to
and including 4.15.x kernels.

However, with 4.16.x kernels and 4.17 kernel, I see graphic corruptions.  In
addition:
 - with 4.16.x kernels my machine ended up freezing completely
 - with 4.17 kernel I saw a GPU hang which I am reporting now

Here is more info:

 - To reproduce this bug: use Plasma desktop for a few hours or days.  It
starts with small graphic corruptions that amplify over time (see screenshots
below) and 
it ends up either with a freeze or with a GPU hang.

 - uname -a
Linux vougeot 4.17.0-041700-generic #201806032231 SMP Sun Jun 3 22:33:34 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 18.04 with Mesa 18.0.0~rc5-1ubuntu1 and later
Mesa 18.0.5-0ubuntu0~18.04.1 from Ubuntu proposed-updates

 - 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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