ubuntu-x-swat team mailing list archive

[Chris Halse Rogers <raof@xxxxxxxxxx>]

** 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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