Public bug reported:

Binary package hint: xorg

Pressing F1 or F2 on the keyboard brings up the little status indicator and the 
slider goes back and fourth, but the backlight doesn't actually get dimmer or 
brighter.
MacBook Pro 6,2 running 64-bit Mactel version of Alpha 3 of Natty Narwhal 11.04 
fully updated as of March 26th

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6~3ubuntu11
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: wl
Architecture: amd64
CompizPlugins: 
[core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1440x900 1152x864 1024x768 800x600 640x480 720x400 640x400 640x350
 edid-base64: 
AP///////wAGEKOcAAAAAAATAQOAIRV4CvWVo1VPnCYPUFQAAAABAQEBAQEBAQEBAQEBAQEBqyKgoFCEGjAwIDYAS88QAAAYAAAAAQAGEDAAAAAAAAAAAAogAAAA/gBMUDE1NFdQNC1UTEExAAAA/gBDb2xvciBMQ0QKICAgAAA=
Date: Sat Mar 26 17:27:44 2011
DistUpgraded: Log time: 2011-03-21 07:46:42.331157
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 5.100.82.38+bdcom, 2.6.38-6-generic, x86_64: installed 
 bcmwl, 5.100.82.38+bdcom, 2.6.38-7-generic, x86_64: installed
GraphicsCard:
 nVidia Corporation GT216 [GeForce GT 330M] [10de:0a29] (rev a2) (prog-if 00 
[VGA controller])
   Subsystem: Apple Computer Inc. Device [106b:00c7]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64+mac (20110312)
MachineType: Apple Inc. MacBookPro6,2
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic 
root=UUID=daed62de-fdc0-40f1-b54f-2d6408f18d44 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
UpgradeStatus: Upgraded to natty on 2011-03-24 (1 days ago)
dmi.bios.date: 07/26/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP61.88Z.0057.B0C.1007261552
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-F22586C8
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro6,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F22586C8
dmi.modalias: 
dmi:bvnAppleInc.:bvrMBP61.88Z.0057.B0C.1007261552:bd07/26/10:svnAppleInc.:pnMacBookPro6,2:pvr1.0:rvnAppleInc.:rnMac-F22586C8:rvrMacBookPro6,2:cvnAppleInc.:ct10:cvrMac-F22586C8:
dmi.product.name: MacBookPro6,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.4git20110322-0ubuntu5
version.libdrm2: libdrm2 2.4.23-1ubuntu5
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20110107+b795ca6e-0ubuntu6

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


** Tags: amd64 apport-bug compiz-0.9 natty running-unity ubuntu

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https://bugs.launchpad.net/bugs/743352

Title:
  LCD backlight doesn't respond to brightness control keys

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