Screen dims even automatic dimming is turned OFF (when on battery)

[Aapo Rantalainen]

Set:
System Settings -> Screen ->
  "Dim screen to save power" -> OFF
and
   Brightness to max.

Disconnect power cable.

Expected: Brightness stay

Actual: Brightness lowers
---
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CheckboxSubmission: 16fcfa228a6401c4bde710ae287e4dc3
CheckboxSystem: dcc25227c08c2ff167970aa46306308d
DistroRelease: Ubuntu 11.10
InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release amd64 (20110720.1)
Package: gnome-control-center 1:3.2.2-0ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Tags: oneiric running-unity
Uname: Linux 3.0.0-13-generic x86_64
UpgradeStatus: Upgraded to oneiric on 2011-11-24 (3 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
usr_lib_gnome-control-center: deja-dup 20.1-0ubuntu0.2

[Aapo Rantalainen (aapo-rantalainen)]

apport information

[Aapo Rantalainen (aapo-rantalainen)]

apport information

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance.

[Aapo Rantalainen (aapo-rantalainen)]

Upstream bug report: https://bugzilla.gnome.org/show_bug.cgi?id=665073

[Launchpad Janitor (janitor)]

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

[Rex Tsai (chihchun)]

Also confirmed this issue in precise.

We have two solutions -

1. Make sure g-s-d check idle-dim-* settings in gconf (gnome-control-center screen)
org.gnome.settings-daemon.plugins.power idle-dim-ac true
org.gnome.settings-daemon.plugins.power idle-dim-battery true

2. Fix gnome-session, to inhibit idle if idle-dim-* is faluse.

[Rex Tsai (chihchun)]

The 2 solution to fix gnome-session will caused screensaver never be actived. So better to fix it in g-s-d.

[Rex Tsai (chihchun)]

The UI design of "gnome-control-center screen" is very confuseing

* "Dim screen to save power" changed idle-dim-battery (GSD_POWER_IDLE_MODE_DIM)
* "Turn screen off when inactive" changed sleep-display-ac and sleep-display-battery. (GSD_POWER_IDLE_MODE_BLANK)

Both are not interrelated after all.....

In "gnome-control-center screen", it should change idle-dim-time, and text should be "Dim screen when inactive", which make more sense.