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Binary package hint: acpi-support

On a Sony Vaio VPCY115FX (Y series) with the Intel Corporation Mobile 4
Series Chipset Integrated Graphics Controller (Mobile Intel GS45 Express
Chipset) running Karmic 64-bit, the screen brightness control doesn't
work, although the Fn keys seem to be sending the right signals (and
also being correctly interpreted by Gnome).

The output of acpi_listen is

sony/hotkey SNC 00000001 00000011 (Fn+F6 struck - brightness +)
sony/hotkey SNC 00000001 0000003b (Fn+F6 released)
sony/hotkey SNC 00000001 00000010 (Fn+F5 struck - brightness -)
sony/hotkey SNC 00000001 0000003b (Fn+F5 released)

I have tried the following procedures, with no effect.

- http://ubuntuforums.org/showthread.php?p=2877962
- http://ubuntuforums.org/showthread.php?t=733322

This problem has also been reported for previous and current versions of
Ubuntu, on different Vaio laptops with different graphic cards.

- http://ubuntuforums.org/showthread.php?t=1404806

ProblemType: Bug
Architecture: amd64
Date: Sat Feb 20 14:54:25 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
Package: acpi-support 0.129
ProcEnviron:
 LANGUAGE=pt_BR.UTF-8
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
SourcePackage: acpi-support
Uname: Linux 2.6.31-19-generic x86_64

** Affects: gnome-power-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug
-- 
Screen brightness doesn't work on Vaio Y
https://bugs.launchpad.net/bugs/524967
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