[karmic regression] Brightness OSD works, but LCD brightness does not change

[Cristian Klein]

Binary package hint: gnome-power-manager

Hello,

Pressing the brightness down / up buttons on my laptop, show the OSD as if it changed the brightness, but nothing happens. When the brightness is at maximum and one presses brightness up, the LCD goes full brightness (similar for brightness down), but the intermediate states are skipped.

This bug seems to be caused by gnome-power-manager trying to be smart and detect on itself whether the brightness changes in hardware or not (see gpm.log). My laptop does not have hardware OSD setting and still gpm_brightness_hal_set_hw is called only at the end.

ProblemType: Bug
Architecture: i386
Date: Tue Oct 27 19:03:29 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: fglrx
Package: gnome-power-manager 2.28.1-0ubuntu1
ProcEnviron:
 LANGUAGE=fr_FR.UTF-8
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: gnome-power-manager
Uname: Linux 2.6.31-14-generic i686

[Pedro Villavicencio (pedro)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. A new version of GNOME Power Manager is available on Maverick and we are wondering if this bug is still an issue for you with that version? Could you please test and comment back? Thanks in advance.

[Cristian Klein (cristiklein)]

I was unable to reproduce this issue after a fresh upgrade to Maverick. Most likely, the issues has been fixes with the major changes that have been made around g-p-m / upower.