Public bug reported:

When hitting the brightness keyboard hot keys a notification comes up
displaying the the brightness is changing; however the actual screen
brightness never changes.

By going into NVidia's control panel I'm able to manually change the
screen brightness.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic x86_64
NonfreeKernelModules: nvidia
.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  295.49  Mon Apr 30 23:46:33 
PDT 2012
 GCC version:  gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
.tmp.unity.support.test.0:
 
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
CompizPlugins: 
[core,composite,opengl,decor,gnomecompat,move,vpswitch,grid,regex,imgpng,mousepoll,resize,compiztoolbox,place,snap,animation,session,unitymtgrabhandles,workarounds,screenshot,wall,expo,ezoom,fade,scale,unityshell]
CompositorRunning: compiz
Date: Mon Jun 25 11:09:58 2012
DistUpgraded: 2012-06-07 17:37:42,096 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current-updates, 295.49, 3.2.0-25-generic, x86_64: installed
 virtualbox, 4.1.12, 3.2.0-24-generic, x86_64: installed
 virtualbox, 4.1.12, 3.2.0-25-generic, x86_64: installed
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 NVIDIA Corporation G98 [GeForce 9300M GS] [10de:06e9] (rev a1) (prog-if 00 
[VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1505]
JockeyStatus:
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, 
Disabled, Not in use)
 xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release 
updates) (Proprietary, Enabled, In use)
MachineType: Hewlett-Packard HP Pavilion dv3500 Notebook PC
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: root=UUID=34ce2b6b-d74a-4864-b47a-51ee0d304a2b ro quiet 
splash
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to precise on 2012-06-07 (17 days ago)
dmi.bios.date: 05/04/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.15
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1505
dmi.board.vendor: Inventec
dmi.board.version: KBC Version 13.14
dmi.chassis.asset.tag: CNU921378L
dmi.chassis.type: 10
dmi.chassis.vendor: Inventec
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.15:bd05/04/2009:svnHewlett-Packard:pnHPPaviliondv3500NotebookPC:pvrF.15:rvnInventec:rn1505:rvrKBCVersion13.14:cvnInventec:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv3500 Notebook PC
dmi.product.version: F.15
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.19.0-0ubuntu1~xup1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20111201+b5534a1-1build2

** Affects: gnome-settings-daemon (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug compiz-0.9 precise regression-update 
third-party-packages ubuntu

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https://bugs.launchpad.net/bugs/1017556

Title:
  Brightness keyboard hotkeys do not work for the HP Pavilion dv3510nr
  (dv3000) in Ubuntu 12.04

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