[Bug 106921] System lockup with Vega10 amdgpu: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106921

            Bug ID: 106921
           Summary: System lockup with Vega10 amdgpu:
                    [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx
                    timeout
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: sam.psylo at gmail.com

Created attachment 140164
  --> https://bugs.freedesktop.org/attachment.cgi?id=140164&action=edit
dmesg w/mesa 18.0.2-1.fc28

Using Vega10 hardware (in my case, RX Vega 64), the whole system experiences
regular full lockups, requiring me to force reboot either with the power switch
on the PC or using SysRq. The system is still running, since I am able to ssh
in from a separate machine and retrieve logs/run commands/etc, but all keyboard
and mouse input ceases.

I've had this occur when doing a multitude of things, some of which are as
follows:
- Playing games through Steam (Half-Life 2, Portal 2, Terraria tested)
- Playing non-Steam games (SuperTuxKart, GNOME Mines)
- Idle GNOME 3 desktop (no applications running)
- Browsing the web with Firefox 60.0.1

I have had this occur with:
Kernel: 4.16.14-300.fc28.x86_64 (from Fedora repos), 4.17.0 & 4.18.0-git5.1
(from kernel-vanilla repositories linked on Fedora wiki)
Mesa: 18.0.2-1.fc28 (from Fedora repos), 18.2.0-0.11.git41dabdc.fc28 (from
che/mesa copr repo)
linux-firmware: 20180525-85.git7518922b.fc28 (from Fedora repos), with
amdgpu/vega10_vce.bin replaced with newest version from git master.
OS: Fedora 28 Workstation

I am attaching a few dmesgs, each of which going from boot to the bug
occurring.

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