Bug 83205

Summary:	GPU lockup when entering settings in Verdun game with HyperZ enabled
Product:	Mesa	Reporter:	Clément Guérin <libcg>
Component:	Drivers/Gallium/radeonsi	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	git
Hardware:	Other
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Bug Depends on:
Bug Blocks:	75112

Description Clément Guérin 2014-08-28 18:21:31 UTC

When playing Verdun (http://store.steampowered.com/app/242860/), every time I go to the settings I get a GPU lockup. Without R600_DEBUG=hyperz everything is fine.

I'm using mesa 4ca203f, llvm 216658, xorg-server 1.16, xf86-video-ati 7.4.0 on Arch Linux. I tried on Linux 3.14, 3.16 and 3.17rc2 with the same results. My graphics card is a HD 7950.

Here's my journalctl log: http://pastebin.com/s80VLPtr

Comment 1 Hohahiu 2014-08-29 00:28:46 UTC

Hi, Clément,
Marek recently posted patches [1] which are supposed to fix a hang with hyperz. Could you test them? Also there are some other patches which fix rendering with hyperz enabled [2]. As far as I understand these two series were reviewed by not yet mainlined. 
[1] http://lists.freedesktop.org/archives/mesa-dev/2014-August/066519.html
[2] http://lists.freedesktop.org/archives/mesa-dev/2014-August/066389.html

Comment 2 Marek Olšák 2014-08-29 11:06:15 UTC

Please apply both patches mentioned above and test again. If it still hangs, please record a trace file with apitrace (the recording can be done with hyperz disabled, but please make it as small as possible).

https://github.com/apitrace/apitrace

Comment 3 smoki 2014-08-29 11:20:09 UTC

 It is obvious but just as reminder, second patch Hohahiu linked is for evergreen you need this one for radeonsi instead:

 http://lists.freedesktop.org/archives/mesa-dev/2014-August/066388.html

Comment 4 Clément Guérin 2014-08-29 11:35:09 UTC

Thanks for the pointers. I will try as soon as I can.

Comment 5 Clément Guérin 2014-08-30 09:43:17 UTC

Alright, so I compiled lib32-mesa-git from here http://pkgbuild.com/~lcarlier/mesa-git/ with the two patches for radeonsi. It doesn't crash anymore with HyperZ enabled.

I can't be 100% sure though, because Steam managed to update the game just before I launched it. A very minor upgrade, so I assume the issue is fixed.

I guess it's time to reenable HyperZ by default, because it's the only issue I ever had with all the games I tried so far. I will try Brütal Legend now.

Comment 6 Clément Guérin 2014-08-30 10:38:53 UTC

I reverted to lib32-mesa-git 4ca203f and the issue reappeared. So the fix is definitely working! Great job guys. :)

Comment 7 Clément Guérin 2014-09-01 19:58:36 UTC

Marking as RESOLVED FIXED since the fix has just been merged. Keep up the good work!

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