** Description changed:
+ Justification:
+ =============
+ Regression from Ubuntu 10.04, causing an Xserver crash when starting a Qt
application in an multi-head X configuration using Xinerama. The X crash risks
losing user data from unsaved documents in applications.
+
+ Fix:
+ ===
+ This is caused by a typo in commit 80b5d3a3. A fix has been pulled to the
server-1.9 stable branch in commit 3effb61e
(http://cgit.freedesktop.org/xorg/xserver/commit/?id=78f94f19aab66a1e5331df0ce29f36e310b4195d
). This commit has been cherry-picked onto the Natty xserver tree.
+
+ Test case:
+ ========
+ Start a Qt app such as Skype while using Xinerama multi-head. Users of the
binary nVidia driver who have multiple monitors and select “Separate X screen”
rather than “Twinview” in nvidia-settings will be using a Xinerama multi-head
configuration.
+
+ Regression Potential:
+ ==================
+ Low. Patch is a one-line typo fix, and anything which exercises this
codepath currently crashes.
+
+
+ Original report:
+
PROBLEM
=======
Starting a Qt app such as Skype crashes X, leaving
"Caught signal 11 (Segmentation fault). Server aborting"
in Xorg.0.log.old and the dazzled user with the login screen.
This is a bug in X, fixed upstream in
http://cgit.freedesktop.org/xorg/xserver/commit/?id=78f94f19aab66a1e5331df0ce29f36e310b4195d
.
WORKAROUND
==========
Until the fix is released as an official Ubuntu update, Jared Bunting has it
in his PPA at https://launchpad.net/~jared-bunting/+archive/xorg-xserver-650539
(thx!).
You need xserver-xorg-core and xserver-common, so for 32 bit
1) Download
https://launchpad.net/~jared-bunting/+archive/xorg-xserver-650539/+files/xserver-xorg-core_1.9.0-0ubuntu7%2Bbug650539%2B1_i386.deb
and
https://launchpad.net/~jared-bunting/+archive/xorg-xserver-650539/+files/xserver-common_1.9.0-0ubuntu7%2Bbug650539%2B1_all.deb
2) Install
sudo dpkg -i xserver-xorg-core_1.9.0-0ubuntu7+bug650539+1_i386.deb
xserver-common_1.9.0-0ubuntu7+bug650539+1_all.deb
ORIGINAL DESCRIPTION
====================
I think this may be related to QT apps, as keepassx, skype also crash X when
started
This is on maverick will all current updates.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: speedcrunch 0.10.1-2
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Tue Sep 28 12:29:04 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: speedcrunch
---
Architecture: amd64
DistroRelease: Ubuntu 10.10
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
NonfreeKernelModules: nvidia
Package: xorg 1:7.5+6ubuntu3
PackageArchitecture: amd64
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Tags: maverick
Uname: Linux 2.6.35-22-generic x86_64
UnreportableReason: The drivers from nvidia.com are not supported by Ubuntu.
Please uninstall them and test whether your problem still occurs.
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare video
system:
distro: Ubuntu
codename: maverick
architecture: x86_64
kernel: 2.6.35-22-generic
** Changed in: xorg (Ubuntu)
Status: Triaged => Fix Committed
--
SRU: Launching a Qt app crashes X when using Xinerama
https://bugs.launchpad.net/bugs/650539
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