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[Simon Wenner <1268252@xxxxxxxxxxxxxxxxxx>]

I can confirm this bug on a HP Mini 5103 (Ubuntu 14.04, 32bit).

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Title:
  Brightness settings stopped working after upgrade

Status in “linux” package in Ubuntu:
  Confirmed
Status in “linux” source package in Trusty:
  Confirmed

Bug description:
  I upgraded from saucy to trusty on my lenovo g505s laptop. After the upgrade, both the physical key and the brightness settings in the gnome-control centre have stopped working. Whatever level of brightness i decrease it to, it always stays on maximum.
  I'm able to reproduce this only on kernel 3.13. Works as its supposed to on kernel 3.12

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: gnome-control-center 1:3.6.3-0ubuntu50
  ProcVersionSignature: Ubuntu 3.13.0-2.17-generic 3.13.0-rc7
  Uname: Linux 3.13.0-2-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Jan 12 09:17:00 2014
  ExecutablePath: /usr/bin/gnome-control-center.real
  InstallationDate: Installed on 2013-11-16 (56 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  SourcePackage: gnome-control-center
  UpgradeStatus: Upgraded to trusty on 2014-01-06 (5 days ago)
  --- 
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  krishnan   3070 F.... pulseaudio
   /dev/snd/controlC0:  krishnan   3070 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=c545b9da-fef4-4530-9051-29276dfd842c
  InstallationDate: Installed on 2013-11-16 (58 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO INVALID
  NonfreeKernelModules: fglrx
  Package: linux (not installed)
  ProcFB: 0 simple
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-2-generic root=UUID=0b897d24-0c02-4f57-9596-5fcd681c5ed0 ro quiet splash nomodeset vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-2.17-generic 3.13.0-rc7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-2-generic N/A
   linux-backports-modules-3.13.0-2-generic  N/A
   linux-firmware                            1.121
  StagingDrivers: rts5139
  Tags:  trusty staging
  Uname: Linux 3.13.0-2-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-01-06 (6 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 04/23/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 83CN12WW(V1.01)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lenovo G505s
  dmi.board.vendor: LENOVO
  dmi.board.version: 00000000Not Defined
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G505s
  dmi.modalias: dmi:bvnLENOVO:bvr83CN12WW(V1.01):bd04/23/2013:svnLENOVO:pnINVALID:pvrLenovoG505s:rvnLENOVO:rnLenovoG505s:rvr00000000NotDefined:cvnLENOVO:ct10:cvrLenovoG505s:
  dmi.product.name: INVALID
  dmi.product.version: Lenovo G505s
  dmi.sys.vendor: LENOVO

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