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[Launchpad Bug Tracker <1377351@xxxxxxxxxxxxxxxxxx>]

[Expired for xorg (Ubuntu) because there has been no activity for 60
days.]

** Changed in: xorg (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1377351

Title:
  Screen brightness does not change

Status in xorg package in Ubuntu:
  Expired

Bug description:
  When I try to change the screen brightness using my Laptop's keyboard
  it shows me a "bar" that the screen brightness changes. However, the
  actual brightness does not change.

  If I tell the computer to change the brightness, then disconnect the
  charger, close the lid, wait a few seconds and re-open the lid the
  screen's actual brightness changes to the last one I set.

  This work-around works for me, but it is very annoying. If all I want
  to do is reduce brightness to save power I also need to make my
  computer sleep and wake it up again so that the brightness is applied.
  I do not have the immediate feedback to see if it is bright enough for
  my environment.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
  Uname: Linux 3.13.0-36-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  331.38  Wed Jan  8 19:32:30 PST 2014
   GCC version:  gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Sat Oct  4 08:50:59 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   NVIDIA Corporation GK107GLM [Quadro K1000M] [10de:0ffc] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21f6]
  InstallationDate: Installed on 2014-03-27 (190 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326.1)
  MachineType: LENOVO 24382HU
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-36-generic root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/15/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G5ET99WW (2.59 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 24382HU
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG5ET99WW(2.59):bd05/15/2014:svnLENOVO:pn24382HU:pvrThinkPadW530:rvnLENOVO:rn24382HU:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 24382HU
  dmi.product.version: ThinkPad W530
  dmi.sys.vendor: LENOVO
  version.compiz: compiz N/A
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Fri Oct  3 17:05:56 2014
  xserver.configfile: default
  xserver.errors: open /dev/fb0: No such file or directory
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.15.1-0ubuntu2.1

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