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Binary package hint: gdm

I am on 10.04.1, Kernel 2.6.32-24-generic #38-Ubuntu SMP Mon Jul 5 09:22:14 UTC 2010 i686 GNU/Linux.
Hardware: Dell Latitude E-5500

I have a port replicator / docking station in the office and under 9.04
(and later upgraded to 9.10) I had no problem putting the notebook with
lid closed into the dock and after turning on running with external
monitor as the only used display.

Now, after clean install of 10.04 + applying all updates, when I do the
same, the notebook monitor is kept considered by Ubuntu. Although I see
the login screen on the external monitor (with lower resolution - maybe
in parallel displaying also on the imaginary - because closed - notebook
builtin monitor). After login I see empty desktop without notification
area, task bar or menus.

When opening the notebook lid I can see all the elements there.
Changing monitor order (left and right) does not keep the settings until reboot.
I also tried using arandr - configured monitor settings - only lasted until next reboot.

After fiddling around a long time and trying a lot of things (other people have similar problems out in the wild) I got it to work with changing gdm startup script + adding an additional script that I run on X startup - a quite long story, that can be read here: 
http://it-tactics.blogspot.com/2010/08/ubuntu-1004-with-docking-station.html

BTW: I don't have an xorg.conf.

This issue is a regression - it worked in 9.04 and 9.10 (upgraded from
9.04).

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gdm 2.30.2.is.2.30.0-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-24.38-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic i686
Architecture: i386
Date: Wed Aug  4 22:50:59 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: gdm

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


** Tags: apport-bug i386 lucid regression
-- 
docking station and closed lid does not disable notebook screen
https://bugs.edge.launchpad.net/bugs/613650
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