external monitor turns off on laptop

[Pand5461]

I tried Oneiric beta 2 recently.
I use a Fujitsu-Siemens Lifebook S7210 laptop with a Dell monitor connected via DVI. First, when Ubuntu starts with the "Try/Install Ubuntu" window, only laptop screen is working (the monitor screen is blank even when I don't open the laptop lid while loading). I can only turn on the external monitor after booting into desktop using System Settings. But when I try to turn off the laptop screen and keep only the monitor turned on the monitor turns off too.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gnome-control-center 1:3.1.92-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CasperVersion: 1.284
Date: Sat Sep 24 17:12:52 2011
ExecutablePath: /usr/bin/gnome-control-center
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64+mac (20110921.2)
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_gnome-control-center:
 deja-dup 19.92-0ubuntu1
 gnome-bluetooth 3.1.4-0ubuntu2
 indicator-datetime 0.2.95-0ubuntu1

[Bryce Harrington (bryce)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command in a terminal after reproducing the issue, and it it will automatically gather debugging information needed for this bug:

  apport-collect 858357

[bugbot (bugbot)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.