Bug 28563

Summary:	[r300g] CubeStorm hack from XScreenSaver freezes X
Product:	Mesa	Reporter:	Jure Repinc <jlp.bugs>
Component:	Drivers/DRI/r300	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	critical
Priority:	medium
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Jure Repinc 2010-06-15 14:04:01 UTC

I have a HP Compaq nx6325 laptop with integrated graphics (RS482) and XScreenSaver 5.10. When I open the screensaver settings in KDE 4.4.4 and select the Cube Storm hack from the list X freezes. I can still SSH from another machine, but on the laptop keyboard stops responding too. I'm using the Gallium r300 driver (couldn't find a special component for it, hope this one is oK). Mesa is from git, pulled on 2010-06-14.

Comment 1 Jure Repinc 2010-06-17 08:27:03 UTC

I've now also tried on another computer with RV350 AR chip and I also get the freeze. I've also tried to run the hack directly with the same results. BTW, with classic r300 driver all is fine.

Comment 2 Marek Olšák 2010-07-11 10:16:59 UTC

Bisected. The first bad commit which locks up:

commit bd1ce874728c06d08a1f9881f51edbdd2f1c9db0
Author: Chia-I Wu <olv@lunarg.com>
Date:   Mon Mar 8 22:19:48 2010 +0800

    st/dri: Switch from st_public.h to st_api.h.
    
    This is tested with demos found in progs/demos.  However, only the DRI2
    path is tested.

From the branch (which has been merged to master): gallium-st-api-dri
http://cgit.freedesktop.org/mesa/mesa/log/?h=gallium-st-api-dri

If I go one commit back, cubestorm works. It's quite a large commit and it's not clear to me what the commit does in terms of functionality.

BTW, cubestorm is a single-buffered application.

Comment 3 Marek Olšák 2010-07-11 15:07:56 UTC

Fixed in master, closing..

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