[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 #21 from Marko Popovic <popovic.marko at protonmail.com> ---
(In reply to Pierre-Eric Pelloux-Prayer from comment #19)
> (In reply to Marko Popovic from comment #17)
> > (In reply to Pierre-Eric Pelloux-Prayer from comment #15)
> > > (In reply to Marko Popovic from comment #14)
> > > > 
> > > > Yes, always happens at the same place with Citra emulator
> > > 
> > > Could you capture a trace of the problem (using Apitrace or Renderdoc)?
> > > 
> > > This would be very helpful to fix it.
> > 
> > I added reproduced Citra crash recorded by using command:
> > apitrace trace ./citra-qt
> > 
> > I hope this is correct, if you need anything else or done differently please
> > just let me know!
> 
> Thanks for the trace!
> 
> Replaying the trace a few times is enough to reliably to reproduce the hang.
> 
> Using AMD_DEBUG=nongg seems to prevent it so it could be a temporary
> workaround until a proper fix is found.
> Could you confirm this on your system?
> 
> 
> > 
> > I am adding Rocket League crash output from apitrace.
> 
> This trace file is very small (only one frame) and doesn't hang here.

Okay I just got another random hang on the desktop. even with the environment
variable turned on the whole time. Unfortunately it seems to be very hardly
tracable seems to be very random :( Seems that Citra hang is unrelated to this
bug after all, it's a completely different bug. It's good that we discovered
another (citra-related) bug on the way but probably we can't mark that
workaround to solve anything because hangs still randomly occur on the desktop.

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