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[Mario Vukelic <mario.vukelic@xxxxxxxxxxx>]

Damn, sorry, it's not fixed for me after all. Once again I got fooled by
the bubble appearing - but without the option, the brightness does not
change. This is all in an installed Oneiric by the way, I will try to
test with a live CD.

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https://bugs.launchpad.net/bugs/726692

Title:
  Screen backlight adjustment stopped working on MacBook Pro 5,4 and
  other hardware

Status in “gnome-power-manager” package in Ubuntu:
  Incomplete

Bug description:
  The nvidia-current drivers that have recently become available in
  Natty (270.29) work for me in general, but screen backlight adjustment
  does not work anymore on my MacBook Pro. Other hardware seems also
  affected, e.g an Nvidia GT330M in this thread:
  http://ubuntuforums.org/showthread.php?p=10505235

  Neither the keyboard keys nor the brightness applet slider works, the
  applet icon showing a stop sign as usual when brightness adjustment is
  not available.

  Adding this to xorg.conf makes it somewhat work again after a reboot.
  Option "RegistryDwords" "EnableBrightnessControl=1"

  However, this makes only the adjustment work as such; I still don't
  get the notification bubble that appeared with previous drivers, and
  which still appears in Natty when I use the nouveau drivers.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: nvidia-current 270.29-0ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
  Uname: Linux 2.6.38-5-generic x86_64
  NonfreeKernelModules: nvidia wl
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  270.29  Wed Feb 23 16:18:35 PST 2011
   GCC version:  gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-3ubuntu3)
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,uTouch,composite,opengl,decor,move,place,regex,compiztoolbox,resize,grid,snap,vpswitch,mousepoll,wall,session,gnomecompat,animation,workarounds,expo,ezoom,staticswitcher,fade,scale]
  CompositorRunning: compiz
  Date: Mon Feb 28 19:03:50 2011
  DistUpgraded: Yes, recently upgraded Log time: 2011-02-16 12:35:27.758238
  DistroCodename: natty
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia-current, 270.29, 2.6.38-5-generic, x86_64: installed 
   bcmwl, 5.100.82.38+bdcom, 2.6.38-5-generic, x86_64: installed
  GraphicsCard:
   nVidia Corporation C79 [GeForce 9400M] [10de:0863] (rev b1) (prog-if 00 [VGA controller])
     Subsystem: Apple Computer Inc. Device [106b:00ba]
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100131)
  MachineType: Apple Inc. MacBookPro5,4
  ProcEnviron:
   LANGUAGE=en_US:en
   LANG=de_DE.utf8
   LC_MESSAGES=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-5-generic root=UUID=8d2a8ff1-ec5f-4fdb-8d1d-803044f16759 ro quiet splash vt.handoff=7
  Renderer: Unknown
  SourcePackage: nvidia-graphics-drivers
  dmi.bios.date: 06/15/09
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP53.88Z.00AC.B03.0906151647
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-F22587A1
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro5,4
  dmi.chassis.asset.tag: Asset Tag#
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F22587A1
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP53.88Z.00AC.B03.0906151647:bd06/15/09:svnAppleInc.:pnMacBookPro5,4:pvr1.0:rvnAppleInc.:rnMac-F22587A1:rvrMacBookPro5,4:cvnAppleInc.:ct10:cvrMac-F22587A1:
  dmi.product.name: MacBookPro5,4
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  version.compiz: compiz 1:0.9.4-0ubuntu1
  version.libdrm2: libdrm2 2.4.23-1ubuntu3
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1~git20110215.cc1636b6-0ubuntu2
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu8
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu11
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu5

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