[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 #141 from Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com> ---
Thanks for the quake 2 trace, I could reproduce the same hang here.

If anyone has a reliable way to trigger the issue, the most helpful thing to do
for now is an apitrace capture.

The umr log were helpful (thanks!) but I don't need more of them at the moment.

I don't think radv uses SDMA at all, so they cannot be affected by this issue. 
For radeonsi the AMD_DEBUG=nodma environment variable is a workaround until we
figure out a proper fix.

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