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[Karl Rosenbaum <kalle@xxxxxxxxxxxx>]

Those figures are wrong . This is my issue:

I log in and get dual display with laptop monitor at 1440x900 and
external monitor on displayport  at 1920x1080. Then I open the display
settings and turn off the internal monitor and click "Apply". Then both
screen turn blank. For some reason there is no timeout so the screens
remain blank forever. Hitting Ctrl+Alt+F1 and such does not change
anything. I simply have to force poweroff.

I'm able to successfully turn off the external monitor, though. When I
turn off the external monitor, I do get the timeout dialog.

Maybe the timeout dialog appears in the first case also, but I can't see
it and it doesn't restore after the timeout.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/828623

Title:
  [Regression] gnome control centre does not allow you to disable the
  laptop screen while leaving an external DisplayPort connected screen
  working

Status in GNOME Control Center:
  Incomplete
Status in “gnome-control-center” package in Ubuntu:
  Triaged
Status in “gnome-control-center” source package in Oneiric:
  Triaged
Status in Fedora:
  Unknown

Bug description:
  Lenovo T500 with displayport has a 1920x1200 monitor attached, I use
  the displayport in a similar way to a docking station in that I attach
  the monitor with a displayport to dvi cable, and then expect to be
  able to switch off the laptops internal display, only leaving the
  external monitor working.

  Screen detection works fine, mirrored screen works fine, but disabling
  the internal display and activating the external display just leads to
  the screen going black until the timeout has been reached, whereupon
  it reverts to its previous setting.

  This is a fully updated oneiric install

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: gnome-control-center 1:3.1.4-0ubuntu5
  ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
  Uname: Linux 3.0.0-8-generic x86_64
  Architecture: amd64
  Date: Thu Aug 18 10:35:59 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: gnome-control-center
  UpgradeStatus: No upgrade log present (probably fresh install)

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