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[Launchpad Bug Tracker <1426526@xxxxxxxxxxxxxxxxxx>]

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

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

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https://bugs.launchpad.net/bugs/1426526

Title:
  brightness not change

Status in linux package in Ubuntu:
  Expired

Bug description:
  in my laptop Lenovo G510 after change 12.04 to 14.04 brighness not
  change. Hot keys except volume and mute key i.e. f1 f2 f3 not work. I
  am new to linux and knows only some command like update upgrade and
  apt-get install only from various threats. please help me.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  amar       1365 F.... pulseaudio
   /dev/snd/controlC1:  amar       1365 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Feb 28 00:44:38 2015
  HibernationDevice: RESUME=UUID=dffabf6d-9ad9-4fd9-9f72-e16b5a16acf6
  InstallationDate: Installed on 2015-02-27 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20238
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=0110470c-7969-4e0b-b70f-2bc3fa1e09ce ro nomodeset quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/23/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 79CN46WW(V3.05)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: INVALID
  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 G510
  dmi.modalias: dmi:bvnLENOVO:bvr79CN46WW(V3.05):bd12/23/2013:svnLENOVO:pn20238:pvrLenovoG510:rvnLENOVO:rnINVALID:rvr00000000NotDefined:cvnLENOVO:ct10:cvrLenovoG510:
  dmi.product.name: 20238
  dmi.product.version: Lenovo G510
  dmi.sys.vendor: LENOVO

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