[Bug 106913] New: Graphics artifacts and VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 in dmesg

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106913

            Bug ID: 106913
           Summary: Graphics artifacts and
                    VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 in dmesg
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/AMDgpu
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: marcin2006 at gmail.com
        QA Contact: xorg-team at lists.x.org

Hello,
please help to pin down following problem:

I noticed that there are some glitches in graphics after upgrade:
http://img.koci.net.pl/?v=beznazwy.png

It is caused by those packages:
[2018-06-12 20:18] [ALPM] upgraded xf86-video-ati (1:18.0.1-1 -> 1:18.0.1-2)
[2018-06-12 20:18] [ALPM] upgraded xorg-server (1.19.6+13+gd0d1a694f-2 ->
1.20.0-7)
[2018-06-12 20:18] [ALPM] upgraded xorg-server-xvfb (1.19.6+13+gd0d1a694f-2 ->
1.20.0-7)

If you downgrade packages to mentioned versions, problem goes away.
(you can browse changes in Archlinux packages at:
https://git.archlinux.org/svntogit/packages.git/log/trunk?h=packages/xorg-server
https://git.archlinux.org/svntogit/packages.git/log/trunk?h=packages/xf86-video-ati

)

Also my dmesg is full of messages like:

[ 400.831919] VM fault (0x04, vmid 2) at page 1084047, write from 'CB0'
(0x43423000) (0)
[ 400.831995] radeon 0000:00:01.0: GPU fault detected: 146 0x0be50014
[ 400.831996] radeon 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000
[ 400.831997] radeon 0000:00:01.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x0400000C

I noticed screen full of those messages while switching screens with alt + ctrl
+ F1-F7.

I'm running AMD APU on a PC: AMD A8-7600 Radeon R7, 10 Compute Cores 4C+6G.

Full bugreport on Archlinux bugtracker: https://bugs.archlinux.org/task/58874

I don't know if this is enough information, what else I can check?

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