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Binary package hint: gnome-control-center

I have a notebook with intel 945 graphic adapter, internal 1024*768 screen and an external 1280*1024 LCD.
Compiz runs well in clone mode, also xinerama works when compiz is disabled.
The problem occurs with every user (also with a newly created one).

When compiz is running and I try to change from clone- to xinerama-mode
using gnome-display-properities, the screen becomes black, only the mice
is visible and working. When I kill X with Alt-Print-K, on my notebook
screen gdm appears, but on the external screen there are only grey
vertical stripes and the cloned mice. This behavior is visible after
login, too. However, after I logged out again, it works fine.

If I disable desktop-effects and enabled xinerama afterwards, xinerama
works. If I try to enable desktop-effects again, I receive a message box
containing "Die Desktop-Effekte konnten nicht aktiviert werden.".

The problem is reproducible, so feel free to ask further questions.

ProblemType: Bug
Architecture: i386
Date: Sun Oct 25 11:03:19 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/gnome-display-properties
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
Package: gnome-control-center 1:2.28.1-0ubuntu1
ProcEnviron:
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: gnome-control-center
Uname: Linux 2.6.31-14-generic i686

** Affects: xorg-server (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386
-- 
X crashes when changing to xinerama mode while compiz is enabled
https://bugs.edge.launchpad.net/bugs/460306
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