Bug 101969

Summary:	Massive graphics corruption with World of Warcraft
Product:	Mesa	Reporter:	Chris Rankin <rankincj>
Component:	Drivers/Gallium/radeonsi	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:	Default DRI bug account <dri-devel>
Severity:	major
Priority:	medium
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	possible fix

Description Chris Rankin 2017-07-29 12:03:40 UTC

World of Warcraft's login screen has become jumbled garbage with the latest Mesa from git. I don't recognise anything as being rendered by WoW, although there are elements from other applications and windows dancing all over the place.

I have performed a git bisect, and have identified this commit as the cause:

commit 064550238ef0b44e341b2a50c3147f83c2a6d5b0
Author: Marek Olšák <marek.olsak@amd.com>
Date:   Thu Jul 27 02:40:34 2017 +0200

    radeonsi: use CLEAR_STATE to initialize some registers
    
    Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

:040000 040000 621668e602ccd2f36299e329b096586baa920ba0 68d43945fde8fbbfad6ae444546a981af2507b03 M	src

Mesa describes my setup as:

Extended renderer info (GLX_MESA_query_renderer):
    Vendor: X.Org (0x1002)
    Device: AMD BONAIRE (DRM 2.50.0 / 4.12.4, LLVM 5.0.0) (0x665f)
    Version: 17.3.0
    Accelerated: yes
    Video memory: 2048MB
    Unified memory: no

Comment 1 Anton Petrov 2017-07-30 07:52:22 UTC

It's not only WoW. After reboot i see garbage instead of sddm login screen.
Here is a photo https://ibb.co/fQ7dqQ

Radeon HD 7750

Device: AMD CAPE VERDE (DRM 2.50.0 / 4.12.3-gentoo, LLVM 4.0.1) (0x683f)
Version: 17.3.0
Accelerated: yes
Video memory: 1024MB
Unified memory: no

Comment 2 Marek Olšák 2017-07-31 01:09:34 UTC

Created attachment 133143 [details] [review]
possible fix

Can you please test this patch?

Comment 3 Anton Petrov 2017-07-31 03:16:18 UTC

(In reply to Marek Olšák from comment #2)
> Created attachment 133143 [details] [review] [review]
> possible fix
> 
> Can you please test this patch?

Patch did not helped for me. By the way thanks for your great work

Comment 4 Chris Rankin 2017-07-31 19:37:05 UTC

(In reply to Marek Olšák from comment #2)
> Can you please test this patch?

No, it doesn't work for me either.

Comment 5 Chris Rankin 2017-08-01 19:20:18 UTC

Ah, this is now fixed in the latest Mesa-git. I am assuming that this is the relevant commit:

author	Marek Olšák <marek.olsak@amd.com>	2017-07-30 01:37:21 (GMT)
committer	Marek Olšák <marek.olsak@amd.com>	2017-08-01 15:06:38 (GMT)
commit	b9fc9d3f241758ed8a274be7abf68bf448653508 (patch)
tree	982cbf445d27083138874d22599c3fbdb11e0a57
parent	b99dcbfeb344390fea9919199b34e5504f7c84e3 (diff)
radeonsi: fix various CLEAR_STATE issues
Fixes: 064550238ef0 ("radeonsi: use CLEAR_STATE to initialize some registers")

Comment 6 Marek Olšák 2017-08-01 23:53:27 UTC

Yes. Thanks for the bug report. Closing.

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