brightness autonomously toggles after increasing brightness
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gnome-power-manager (Arch Linux) |
New
|
Undecided
|
Unassigned | ||
gnome-power-manager (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: gnome-power-manager
This bug is very similar to bug 456057, but there are a couple of critical differences that I think warrant a new bug:
a) The user in bug 4567057 found that he couldn't change brightness without gnome-power-manager running. I can on my laptop.
b) Bug 456057 could apparently be reproduced without gnome-power-manager (i.e. xubuntu/xfce), whereas I've found killing gnome-power-manager actively solves my problem.
On to my bug:
I have an MSI Wind U100 laptop (model MS-N011 according to the sticker on the bottom). The laptop has hot-keys to control the backlight brightness (Fn+F4/F5). If I lower the brightness this way, everything is OK. If I raise the brightness, something autonomously keeps toggling the brightness up/down one level (or some fairly small amount). I am running a standard Gnome desktop in Karmic UNR (dist-upgrade'd from Jaunty UNR). Things I have observed:
1) The toggling starts soon after the gdm login screen starts after reboot
2) The toggling starts when I increase the brightness using the keyboard
3) The toggling starts if I execute . /usr/share/
4) The toggling lasts while (many seconds;maybe 10-30) and usually stops on its own. Just occasionally it doesn't ever stop on it's own.
5) The toggling stops within a few seconds if I VT-switch to a console
6) The toggling stops immediately if I "kill `pidof gnome-power-
7) The toggling doesn't start if I adjust the brightness using the keyboard whilst in a VT console
8) The toggling doesn't start if I execute the commands from (3) above in a VT console (and those commands have no effect)
9) The toggling doesn't start if I log into a "Gnome failsafe" session.
10) The toggling doesn't start if I log into an "Xterm" session.
11) I can adjust the brightness using the keyboard after having killed gnome-power-
12) If I restart gnome-power-
I have gnome-power-manager package 2.28.1-0ubuntu1.
Architecture: i386 ture: i386 ature: Ubuntu 2.6.31- 14.48-generic settings- daemon: 3113): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed settings- daemon: 3113): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed gnome-authentic ation-agent- 1:3159) : GLib-CRITICAL **: g_once_init_leave: assertion `initialization _value != 0' failed
DistroRelease: Ubuntu 9.10
Package: gnome-power-manager 2.28.1-0ubuntu1
PackageArchitec
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=en_US.UTF-8
ProcVersionSign
Tags: ubuntu-unr
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
(gnome-
(gnome-
(polkit-