[Bug 111481] AMD Navi GPU frequent freezes on both Manjaro/Ubuntu with kernel 5.3 and mesa 19.2 -git/llvm9

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111481

--- Comment #14 from Marko Popovic <popovic.marko at protonmail.com> ---
(In reply to Mathieu Belanger from comment #13) 
> I was able to reproduce that Citra crash.
> Followed the instruction, it did crash instantly after choosing continue (or
> a fraction of a second after, the music lagged a lil and complete system
> crash (was able so sync/umount/reboot with the magics key)).
> 
> Is your crash exactly at the same place? If so then it's very reproducible
> and  it might be a good idea to run a opengl trace to see what commands was
> sent last to provoke the crash.
> 
> I am not familiar with the Ubuntu stuff, is these got compiled on your
> system? if no do you know the build date of your Mesa, libdrm and
> xf86-video-amdgpu (x11 ddx).
> 
> Also can you tell what microcode files dates you do have?
> 
> Libdrm : 07:49:10 PM 08/27/2019
> Mesa : 05:37:07 PM 08/30/2019
> Xorg amdgpu DDX : 07:55:17 PM 08/27/2019
> 
> The microcode files where not available on my distribution when I installed
> them. I did download/install them on August 6 but they where from July 15
> ish I think, I remember that the latest microcode at that time where
> crashing with a black screen on module load and that's why I did install an
> older version.

Yes, always happens at the same place with Citra emulator, however what bothers
me more about the bug is that sometimes it happens completely randomly on my
system without any really obvious triggers while just browsing and using my
desktop, so it's not Citra exclusive, but luckily I've found the Citra method
to provode the bug so we can do more detailed logging.

Further observations:
- Bug is the same-type as other crashes and is not Citra emulator exclusive,
happens on Rocket League on launch as well and sometimes randomly while using
the desktop
- Same type of crash IS NOT reproducable on Windows on the same GPU
- Same type of bug IS NOT reproducable on my IntelHD laptop with same versions
of MESA/LLVM which probably means either faulty AMD kernel driver or faulty
Firmware binaries.

My versions are:
MESA: Mesa 19.3.0-devel (git-6775a52 2019-09-02 eoan-oibaf-ppa)
Kernel: Ubuntu mainline 5.3 daily build (I ALSO tried amd-drm-next-5.4, same
bug is reproducable)
Firmware binaries: 2019-08-26 from /~agd5f/radeon_ucode/navi10

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