Screen Brightness not working in Sony Vaio

[Leif Andersen]

I have a Sony Vaio VPC EB11FM, on it the keys to control screen brightness (Fn+F5/6) don't do anything. I'm not exactly sure what's causing this, so I apologize if I included the wrong packages. Also, if I go into the power manager, and play with the screen brightness knobs, the brightness does actually change.

Thank you.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-23.40-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic x86_64
Architecture: amd64
DRM.card0.DisplayPort.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
DRM.card0.HDMI_Type_A.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1366x768
 edid-base64:
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
Date: Fri Nov 26 08:43:02 2010
DkmsStatus:
 blcr, 0.8.2: added
 virtualbox-ose, 3.2.8, 2.6.35-22-generic, x86_64: installed
 virtualbox-ose, 3.2.8, 2.6.35-23-generic, x86_64: installed
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Sony Corporation VPCEB11FM
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-23-generic root=UUID=4aafe574-40c4-4837-b315-866a30e85ea2 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 01/26/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: R0230Y8
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR0230Y8:bd01/26/2010:svnSonyCorporation:pnVPCEB11FM:pvrC6044G8W:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VPCEB11FM
dmi.product.version: C6044G8W
dmi.sys.vendor: Sony Corporation
system:
 distro: Ubuntu
 codename: maverick
 architecture: x86_64
 kernel: 2.6.35-23-generic