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[bugbot <587797@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Binary package hint: xorg
  
  I have an external monitor attached to my laptop through a docking station. I use Ubuntu Lucid Lynx.
  I work only with the external monitor and the laptop monitor should be switched off. This can easily be done with gnome-display-properties.
  But sometimes (after a reboot or even during normal working), the monitor settings are reset such that the laptop monitor is turned on again. This implicates, that the panel is moving on the laptop screen, which is closed. Without a panel it is hard to run gnome-display-properties to change the display settings again (but I can run it with Alt-F2). 
  In Ubuntu Karmic, I had no problems. How do I disable this new "feature"?
  It is hard to say how to reproduce the problem, because it is not regularly happening. Sometimes after a reboot, sometimes when I start a video, sometimes after a screensaver period, but not always after these actions.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: xorg 1:7.5+5ubuntu1
  ProcVersionSignature: Ubuntu 2.6.32-22.33-generic-pae 2.6.32.11+drm33.2
  Uname: Linux 2.6.32-22-generic-pae i686
  NonfreeKernelModules: wl
  Architecture: i386
  CheckboxSubmission: 63f262de0e78838d53ab53e7d87cc43e
  CheckboxSystem: d00f84de8a555815fa1c4660280da308
  Date: Mon May 31 09:44:26 2010
  DkmsStatus:
   bcmwl, 5.60.48.36+bdcom, 2.6.32-21-generic-pae, i686: installed 
   bcmwl, 5.60.48.36+bdcom, 2.6.32-22-generic, i686: installed 
   bcmwl, 5.60.48.36+bdcom, 2.6.31-20-generic-pae, i686: installed 
   bcmwl, 5.60.48.36+bdcom, 2.6.32-22-generic-pae, i686: installed
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
  MachineType: Dell Inc. Latitude E5400
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic-pae root=UUID=0b1a4523-d976-4893-93e9-98d020867118 ro quiet splash
  ProcEnviron:
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: xorg
  Symptom: display
  dmi.bios.date: 08/11/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A13
  dmi.board.name: 0D693C
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA13:bd08/11/2009:svnDellInc.:pnLatitudeE5400:pvr:rvnDellInc.:rn0D693C:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude E5400
  dmi.sys.vendor: Dell Inc.
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       i686
   kernel:             2.6.32-22-generic-pae
+ 
+ [lspci]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
+     	Subsystem: Dell Device [1028:0262]

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https://bugs.launchpad.net/bugs/587797

Title:
  [gm45] With external monitor, laptop monitor sometimes turns back on.