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[Bug 1448294] [NEW] System doesn't change the brightness

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Public bug reported:

Since I upgraded my ubuntu from 14.04 to 15.05 the brightness settings
stopped working. it doesn't matter where you change, it keeps always the
highest.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Fri Apr 24 17:13:52 2015
DistUpgraded: 2015-04-24 12:38:51,286 DEBUG enabling apt cron job
DistroCodename: vivid
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer Device [1297:2027]
InstallationDate: Installed on 2015-02-06 (76 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Standard Standard
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=43e3223d-3c29-4843-a29c-d6c0c59aa72e ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to vivid on 2015-04-24 (0 days ago)
dmi.bios.date: 05/06/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.07
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Standard
dmi.board.vendor: Standard
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: Standard
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.07:bd05/06/2013:svnStandard:pnStandard:pvrTobefilledbyO.E.M.:rvnStandard:rnStandard:rvrTobefilledbyO.E.M.:cvnStandard:ct10:cvrToBeFilledByO.E.M.:
dmi.product.name: Standard
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Standard
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Fri Apr 24 14:18:11 2015
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                6972 
 vendor                                     AUO
xserver.version: 2:1.17.1-0ubuntu3

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


** Tags: amd64 apport-bug compiz-0.9 ubuntu vivid

-- 
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Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1448294

Title:
  System doesn't change the brightness

Status in xorg package in Ubuntu:
  New

Bug description:
  Since I upgraded my ubuntu from 14.04 to 15.05 the brightness settings
  stopped working. it doesn't matter where you change, it keeps always
  the highest.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Fri Apr 24 17:13:52 2015
  DistUpgraded: 2015-04-24 12:38:51,286 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer Device [1297:2027]
  InstallationDate: Installed on 2015-02-06 (76 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Standard Standard
  ProcEnviron:
   LANGUAGE=pt_BR:pt:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=pt_BR.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=43e3223d-3c29-4843-a29c-d6c0c59aa72e ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to vivid on 2015-04-24 (0 days ago)
  dmi.bios.date: 05/06/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.07
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Standard
  dmi.board.vendor: Standard
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 10
  dmi.chassis.vendor: Standard
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.07:bd05/06/2013:svnStandard:pnStandard:pvrTobefilledbyO.E.M.:rvnStandard:rnStandard:rvrTobefilledbyO.E.M.:cvnStandard:ct10:cvrToBeFilledByO.E.M.:
  dmi.product.name: Standard
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Standard
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Fri Apr 24 14:18:11 2015
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                6972 
   vendor                                     AUO
  xserver.version: 2:1.17.1-0ubuntu3

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