[Bug 585601] [NEW] unplugging AC-power triggers "lid is closed" event

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Binary package hint: upower / devicekit-power

Since I am using Ubuntu Lucid (10.04) I have the following issue on my 4 year old Samsung x20 Laptop:
Whenever I unplug the AC-power cable the laptop triggers the "lid is closed" event. 

For example, if I change the preferences in "Power Management
Preferences" in the tab "On Battery Power" the option for "When laptop
lid is closed" to e.g. "Blank screen" - then the screen will blank when
unplugging. When I set this option to "Suspend", then the laptop will
suspend.

I did not suffer from anything similar in the past - so this is a regression in Lucid.
Reporting the bug against UPower/devicekit-power but maybe this is a gpm-issue - feel free to reassign.
If I can provide further information, please let me know.  How can this be debugged? 


---
Architecture: i386
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100213)
Package: upower 0.9.1-1
PackageArchitecture: i386
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-22.34~kms1-generic 2.6.32.11+drm33.2
Tags: lucid
Uname: Linux 2.6.32-22-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-collected regression-potential
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unplugging AC-power triggers "lid is closed" event
https://bugs.launchpad.net/bugs/585601
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