[Bug 216625] [regression] GPU lockup on Radeon R7 Kaveri

[bugzilla-daemon at kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216625

--- Comment #10 from Pierre Ossman (pierre-bugzilla at ossman.eu) ---
I finally got that old version of mesa to build. Unfortunately, the hangs still
happen even with that. :/

> Mar 09 07:18:30 kernel: radeon 0000:00:01.0: ring 3 stalled for more than
> 10028msec
> Mar 09 07:18:30 kernel: radeon 0000:00:01.0: GPU lockup (current fence id
> 0x000000000000fa91 last fence id 0x000000000000fabc on ring 3)
> Mar 09 07:18:31 kernel: radeon 0000:00:01.0: ring 5 stalled for more than
> 10077msec
> Mar 09 07:18:31 kernel: radeon 0000:00:01.0: GPU lockup (current fence id
> 0x00000000000018fb last fence id 0x00000000000018fe on ring 5)
> Mar 09 07:18:31 kernel: radeon 0000:00:01.0: ring 0 stalled for more than
> 10202msec
> ...

What can we do next to pinpoint this?

It seems to fail rather reliably after a suspend/resume. Is there some test
suite I can run to provoke things?

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