Bug 27224 - System hangs after switching from full-screen 3D application back to X on R200
Summary: System hangs after switching from full-screen 3D application back to X on R200
Status: NEW
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/r200 (show other bugs)
Version: 7.6
Hardware: All All
: medium normal
Assignee: Default DRI bug account
QA Contact:
URL:
Whiteboard:
Keywords: NEEDINFO
Depends on:
Blocks:
 
Reported: 2010-03-21 07:55 UTC by Ondrej Zary
Modified: 2010-04-07 09:05 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
X log (40.72 KB, text/plain)
2010-03-21 07:55 UTC, Ondrej Zary 		Details
dmesg (15.07 KB, text/plain)
2010-03-21 07:56 UTC, Ondrej Zary 		Details
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Description Ondrej Zary 2010-03-21 07:55:49 UTC 
Created attachment 34293 [details]
X log

When switching from full-screen 3D game (Urban Terror) back to X (using alt+tab), the desktop appears and the machine hangs instantly and completely (does not respond to pings).
Comment 1 Ondrej Zary 2010-03-21 07:56:14 UTC 
Created attachment 34294 [details]
dmesg
Comment 2 Ondrej Zary 2010-04-03 14:47:07 UTC 
Looks like MESA bug. 7.7 hangs, 7.5 does not.
Comment 3 Ondrej Zary 2010-04-05 04:37:51 UTC 
7.6 hangs too.
Comment 4 Pauli 2010-04-06 02:25:11 UTC 
Does booting with kernel parameter radeon.modeset=1 help?
Comment 5 Ondrej Zary 2010-04-06 02:30:29 UTC 
KMS was completely broken on this system last time I tried it (3D did not work at all).
Comment 6 Pauli 2010-04-06 02:46:53 UTC 
> --- Comment #5 from Ondrej Zary <linux@rainbow-software.org> 2010-04-06 02:30:29 PDT ---
> KMS was completely broken on this system last time I tried it (3D did not work
> at all).
>

Netconsole (http://www.kernel.org/doc/Documentation/networking/netconsole.txt)
might let you capture some useful kernel messages just before freeze.
If normal boot doesn't produce any useful information from the freeze
booting with drm.debug=15 would give lots of debug information.

That sounds like serious bug that should be fixed. Is there open bug
report about your KMS problems?
Comment 7 Ondrej Zary 2010-04-07 09:05:13 UTC 
Created a bug report about KMS problems here: https://bugs.freedesktop.org/show_bug.cgi?id=27517

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