Screen brightness increases by itself
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gnome-power-manager (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
If I decrease the screen brightness using the Fn-F5 key to the lowest level, after a few seconds of inactivity (without touching the keyboard nor the touchpad) the screen brightness goes up automatically to a medium level.
Then, as soon as I move the pointer, the brightness is increased to the maximum level.
From this point on, the screen brighness alternates automatically between medium/maximum level. That is, it decreases when idle, and increases when using the keyboard or mouse.
The expected behaviour is that brightness does not change by itself once set using the Fn keys.
This bug happens when on battery power.
I didn't try on AC power.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-power-manager 3.2.1-2
ProcVersionSign
Uname: Linux 3.2.0-8-generic x86_64
ApportVersion: 1.90-0ubuntu2
Architecture: amd64
Date: Sat Jan 14 21:44:39 2012
ProcEnviron:
PATH=(custom, no user)
LANG=it_IT.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-power-manager
UpgradeStatus: No upgrade log present (probably fresh install)
I found a workaround, which is to disable automatic dimming when idle, using the following command:
gsettings set org.gnome. settings- daemon. plugins. power idle-dim-battery false