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[Alex Shtof <1313892@xxxxxxxxxxxxxxxxxx>]

What do you mean by "not adjustable"? You do not have UI controls to
adjust it? Or the UI controls that should adjust it just do nothing? If
it is the 2nd option, then I have reported a duplicate (and have a work-
around).

https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1377351

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https://bugs.launchpad.net/bugs/1313892

Title:
  Display Brightness not Adjustable

Status in “xorg” package in Ubuntu:
  Confirmed

Bug description:
  After upgrade to 14.04, display brightness is does no longer
  adjustable through system configuration.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,vpswitch,place,gnomecompat,move,mousepoll,resize,snap,grid,unitymtgrabhandles,wall,session,regex,animation,fade,workarounds,expo,scale,ezoom,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Mon Apr 28 21:45:36 2014
  DistUpgraded: 2014-04-22 15:37:30,834 DEBUG enabling apt cron job
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 4.3.10, 3.11.0-19-generic, x86_64: installed
   virtualbox, 4.3.10, 3.13.0-24-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Sony Corporation Device [104d:9084]
  MachineType: Sony Corporation VPCZ21C5E
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic root=/dev/mapper/volgrp0-vol1 ro splash quiet nomdmonddf nomdmonisw vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to trusty on 2014-04-22 (6 days ago)
  dmi.bios.date: 06/16/2011
  dmi.bios.vendor: INSYDE
  dmi.bios.version: R0170H5
  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:bvnINSYDE:bvrR0170H5:bd06/16/2011:svnSonyCorporation:pnVPCZ21C5E:pvrJ004MG71:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: VPCZ21C5E
  dmi.product.version: J004MG71
  dmi.sys.vendor: Sony Corporation
  version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  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
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Sat Apr 26 16:17:49 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                  37 
   vendor                                     MS_
  xserver.version: 2:1.15.1-0ubuntu2

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