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[Robert Ancell <robert.ancell@xxxxxxxxxxxxx>]

I've done some testing and I don't reproduce these problems in my setup.
Other people have confirmed working multi-monitor behaviour.

What I see is:
- If the monitor is plugged in before boot, then the greeter is shown mirrored on both monitors
- If the monitor is plugged in after boot, then the greeter remains on the primary monitor, and the second monitor just shows a black background.

If you're getting this problem, can you use the following PPA and attach the file /var/log/lightdm/:0-greeter.log (or /var/log/lightdm/x-0-greeter.log for newer versions of lightdm).
https://launchpad.net/~robert-ancell/+archive/unity-greeter

Thanks

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https://bugs.launchpad.net/bugs/813566

Title:
  Greeter not displayed correctly on multi monitor setup

Status in Light Display Manager:
  Triaged
Status in Unity Greeter:
  Triaged
Status in “lightdm” package in Ubuntu:
  Triaged
Status in “unity-greeter” package in Ubuntu:
  Triaged

Bug description:
  Upon booting with an external monitor (1920x1200 resolution) hooked up
  to my laptop (1920x1080 resolution), the external display mirrors the
  laptop display, but garbles the screen (see screenshot).

  Using GDM, the external display is treated as extra screen space
  (greeter appears on laptop screen only), and is not garbled

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: lightdm 0.4.3-0ubuntu1
  ProcVersionSignature: Ubuntu 3.0.0-5.6-generic 3.0.0-rc7
  Uname: Linux 3.0.0-5-generic x86_64
  Architecture: amd64
  Date: Wed Jul 20 07:52:42 2011
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Release Candidate amd64 (20100419.1)
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: lightdm
  UpgradeStatus: Upgraded to oneiric on 2011-07-13 (6 days ago)

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