This bug was fixed in the package compiz -
1:0.9.9~daily13.06.19~13.04-0ubuntu1
---------------
compiz (1:0.9.9~daily13.06.19~13.04-0ubuntu1) raring; urgency=low
[ Chris Townsend ]
* Fixed issue where minimizing an unredirect full screen window would
repaint the full screen window after minimizing it even though it
isn't really there. This is a backport of lp:compiz revno. 3686.
(LP: #1053895)
[ Marco Trevisan (Treviño) ]
* OpenGL Screen: Ignore the MSAA configs during initialization This
fixes a crash with new MESA drivers and high monitor resolutions
caused by the fact that we're accidentally using some MSAA configs
with some drivers in Mesa 9.0. Taking in account the values of
GLX_SAMPLES and GLX_SAMPLE_BUFFERS fixes the issue. See mesa bug
https://bugs.freedesktop.org/show_bug.cgi?id=61182. (LP: #1174495)
[ Hu Kang ]
* Use XIDefineCursor rather than XDefineCursor. compiz should show a
busy cursor during the application startup stage. the corresponding
code is in scr/screen.cpp:
cps::StartupSequenceImpl::updateStateFeedback () the patch changes
all XDefineCursor to XIDefineCursor (see XInput2 extension) (LP:
#1179155). (LP: #1179155)
[ Ubuntu daily release ]
* Automatic snapshot from revision 3657 (bootstrap)
* Automatic snapshot from revision 3658
compiz (1:0.9.9~daily13.05.08~13.04-0ubuntu1) raring; urgency=low
* Automatic snapshot from revision 3652
compiz (1:0.9.9~daily13.05.01.1ubuntu.unity.next-0ubuntu1) raring;
urgency=low
* Automatic snapshot from revision 3651 (ubuntu-unity/next)
-- Ubuntu daily release <[email protected]> Wed, 19 Jun 2013
04:02:36 +0000
** Changed in: compiz (Ubuntu Raring)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1174495
Title:
Window Managers instability with r600 radeon and high monitor
resolutions
Status in Compiz:
Fix Committed
Status in Compiz 0.9.9 series:
Fix Committed
Status in Mesa:
Fix Released
Status in “cogl” package in Ubuntu:
Confirmed
Status in “compiz” package in Ubuntu:
Fix Committed
Status in “kde-workspace” package in Ubuntu:
Fix Released
Status in “mesa” package in Ubuntu:
Confirmed
Status in “cogl” source package in Raring:
Confirmed
Status in “compiz” source package in Raring:
Fix Released
Status in “kde-workspace” source package in Raring:
Fix Released
Status in “cogl” source package in Saucy:
Confirmed
Status in “compiz” source package in Saucy:
Fix Committed
Status in “kde-workspace” source package in Saucy:
Fix Released
Bug description:
[Impact]
KWin 4.10.2 and Compiz 0.9.9 are using MSAA visuals with 13.04's mesa.
This is unintended and leads to resource exhaustion which eventually crashes
the WM.
This affects all users on the r600 with sufficiently sized displays.
[Test Case]
Run Kwin or Unity with an r600 card, if it does not crash after a while we
are happy.
[Regression Potential]
None, the fix was done by an upstream KWin and Mesa developer plus it has
been incorporated into Fedora for a while plus it was used elsewhere in KWin
already but not in this specific code path.
[Other Info]
None.
--------------------------------------
I think the version of kwin included in 13.04 contains a known bug as
described here:
https://bugs.kde.org/show_bug.cgi?id=315089
https://bugs.freedesktop.org/show_bug.cgi?id=61182
My understanding of the problem is as follows:
* The Mesa radeon r600 driver recently added support for MSAA GLX visuals
* Kwin isn't aware of MSAA properties and happens to (incorrectly) pick MSAA
visuals for everything
* These visuals occupy a large amount of memory when running at high monitor
resolutions
* Mesa is "only" capable of mapping 256MB of visuals into CPU address space
at once
* Kwin's oversize visuals exceeds this limit, resulting in constant crashes
The two radeon systems I have both crash immediately after logging in,
when running with at a resolution of 2560x1440 and desktop effects
enabled. After restarting kwin, a crash can be induced by performing
actions that triggers desktop effects/animations. The resulting
callstack is attached.
ProblemType: BugDistroRelease: Ubuntu 13.04
Package: kde-window-manager 4:4.10.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
Date: Mon Apr 29 19:53:57 2013
InstallationDate: Installed on 2013-04-27 (2 days ago)
InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: TrueSourcePackage: kde-workspace
UpgradeStatus: No upgrade log present (probably fresh install)
--------------------------------------
Compiz (unity) is affected by the same issue as shown in this
stacktrace:
http://paste.ubuntu.com/5661055/
To manage notifications about this bug go to:
https://bugs.launchpad.net/compiz/+bug/1174495/+subscriptions
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