[Bug 316000] [NEW] [Intrepid] Screen corruption when enabling/disabling external monitor with compiz

[Paul Jones]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

Steps to reproduce
1) Start laptop (Lenovo T400) with external monitor disconnected.
2) Log into Gnome with compiz enabled
3) Plug in external monitor
4) Enable external monitor (Mirror Screens is unchecked) in the Screen Resolutions Utility and click apply.

When this happens I expect my desktop to be extended to the external
monitor. Instead the screen is corrupted (photo attached). In this state
the mouse pointer moves, but the rest of the screen is frozen. Further
I'm unable switch tty. By killing X (ctrl-alt-bksp) I return to GDM.
When I log in again, my desktop is extended across both monitors
properly with compiz enabled.

Further Information
This bug does not occur if compiz is not enabled. To get compiz working with dual monitors I applied the patch found in  bug 146859. I installed the drivers found in http://ppa.launchpad.net/intel-gfx-testing/ubuntu, but the bug had manifested itself BEFORE those drivers were installed.

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 8.10
Package: xserver-xorg-video-intel 2:2.5.1-1ubuntu5~intrepid
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.27-11-generic (buildd at crested) (gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu11) ) #1 SMP Thu Jan 8 08:38:38 UTC 2009

SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.27-11-generic x86_64
UnreportableReason: This is not a genuine Ubuntu package
xkbcomp:

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug

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[Intrepid] Screen corruption when enabling/disabling external monitor with compiz
https://bugs.launchpad.net/bugs/316000
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