[Bug 566260] [NEW] Fn+F5 and Fn+F6 doesn't modify brightness on Sony VAIO VGN-NW21MF (ATI Mobility 512MB)

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Binary package hint: acpi-support

Pressing Fn+F5 and Fn+F6 doesn't modify brightness on Sony VAIO VGN-NW21MF.
notify-osd shows but the brightness bar on it does not increase or decrease, and the actual brightness on the screen won't change.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: acpi-support 0.134
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
Date: Sun Apr 18 22:35:50 2010
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: acpi-support

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid
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Fn+F5 and Fn+F6 doesn't modify brightness on Sony VAIO VGN-NW21MF (ATI Mobility 512MB)
https://bugs.launchpad.net/bugs/566260
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