Public bug reported:

Binary package hint: pm-utils

On the MSI Wind U100, if brightness is adjusted with either the brightness 
function keys or Ubuntu itself it gets itself stuck in a continuous loop 
whereby the brightness applet(? - the pop up window) stays continuously on the 
screen, and the brightness level toggles between the current setting and the 
next brightness setting up (e.g. say 10% and 20% or 50% and 60% etc).
This also results in the brightness of the screen actually continuously 
changing as well, making it very difficult to use.

This also occurs at startup, so from boot time onwards the brightness of the 
backlight for the screen is flashing constantly.
A work around at the moment, is to set the brightness level in the 
System-Preferences-Power Management to the lowest level.
This stops the screen from flashing continuously (unless you try and adjust the 
screen brightness).
Thankfully the lowest level on the Wind is quite usable in most lighting 
conditions.

ProblemType: Bug
Architecture: i386
Date: Sat Oct 10 11:55:24 2009
DistroRelease: Ubuntu 9.10
Package: pm-utils 1.2.5-2ubuntu7
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-13.42-generic
SourcePackage: pm-utils
Uname: Linux 2.6.31-13-generic i686

** Affects: pm-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

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MSI Wind U100 - brightness adjustment problem
https://bugs.launchpad.net/bugs/447764
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