MSI Wind U100 - brightness adjustment problem

Bug #447764 reported by yze on 2009-10-10
This bug report is a duplicate of:  Bug #415023: brightness is broken on MSI WIND U100. Edit Remove
168
This bug affects 37 people
Affects Status Importance Assigned to Milestone
pm-utils (Ubuntu)
Undecided
Unassigned
Nominated for Hardy by Cigar
Nominated for Karmic by Cigar
Nominated for Lucid by cwill

Bug Description

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

yze (kawise) wrote :

confirmed on my u100

TomBoj (tomboj) wrote :

My U100 is changing brightness (blinking), until I click the "start" button.

yze (kawise) wrote :

heh - thanks for that, nice work-a-round for now

binarypill (binary-pill) wrote :

i'm also affected with this bug. i've found that, if the brightness-blinking starts, i can go to a terminal and do a "killall gnome-power-manager" to stop the blinking. @TomBoj, where's that "start" button?

yze (kawise) wrote :

Please excuse us ex-windows button.
The "Start" button would be the "Main Menu" button (Ubuntu logo) on the 'task bar' panel, that brings up the main menu.

TomBoj (tomboj) wrote :

binarypill: I think the Main Menu (ubuntu logo) button. I hope shortly repair this bug.

flan_suse (flansuse) wrote :

This also affects me on the final stable release of Xubuntu 9.10, MSI Wind u100. The brightness goes insane, flipping from brighter to darker to brighter, in an endless loop. This is a pretty severe bug.

pascal (pascal-mailinator) wrote :

 I have exactly the same problem.

Steve (sckaplan) wrote :

I have the same problem with a Wind U123.

BerryKriesels (berry-exisoft) wrote :

I too have the exact same problem. A fix would be very much appreciated!

I have exactly the same problem with my msi u100.

.k. (k-lele) wrote :

Even my U100 has the same problem. The only solution is to make a few clicks on the main menu.

    I figured out a solution that works indefinitely, at least till an
update comes along anyway. Go to applications>settings>Xfce 4 Settings
Manager>Power Management and all settings for monitor and brightness to
never. So far this has worked, as long as I don't try to adjust the
brightness because that would trigger our little problem again which I don't
wanna do. So until there is a fix this works fine, actually I'll keep my
settings this way just in case. Hope this helps.

On Wed, Nov 4, 2009 at 10:45 AM, .k. <email address hidden> wrote:

> *** This bug is a duplicate of bug 415023 ***
> https://bugs.launchpad.net/bugs/415023
>
> Even my U100 has the same problem. The only solution is to make a few
> clicks on the main menu.
>
> --
> MSI Wind U100 - brightness adjustment problem
> https://bugs.launchpad.net/bugs/447764
> You received this bug notification because you are a direct subscriber
> of a duplicate bug (via bug 415023).
>
> Status in “pm-utils” package in Ubuntu: New
>
> Bug description:
> 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
>

Eui Kyom, Kim (deholexp) wrote :

My Wind U123 is also shown this problem.

vigohe (vigohe) wrote :

Me too I have a MSI WIND U100

Karl Tamás (sempai) wrote :

I have exactly the same problem. On MSI WIND U100.

xiaomo (xiaomo) wrote :

I got the same problem with MSI U123.

Erez Ben Shoham (erez-bens) wrote :

I have the same problem on my u100

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in pm-utils (Ubuntu):
status: New → Confirmed
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