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[Sundaravenkataraman <1180156@xxxxxxxxxxxxxxxxxx>]

Hoping that this link will be useful to all...

http://askubuntu.com/questions/293925/brightness-buttons-not-working-
properly

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https://bugs.launchpad.net/bugs/1180156

Title:
  Brightness keys not working Lenovo E430.

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Ubuntu 13.04, Lenovo E430.

  The brightness keys on this laptop act a little strange. If I hit the
  brightness down key, it will drop the brightness to about 1%. If I
  press brightness up, it does nothing at all. I see the pop ups come up
  as if it's trying, but it never actually changes the brightness at
  all.

  If I go into the brightness and lock menu from system settings and
  adjust the brightness via the slider it works absolutely fine. This
  makes me wonder a few things. What is the difference between the
  function keys and the slider in system settings? How is it one works
  and the other doesn't? Is there a way to re-map the function keys to
  adjust the brightness slider?

  Also - I tried the mainline 3.9 kernel and it acted 100% identical to
  the Ubuntu 3.8 kernel.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-19-generic 3.8.0-19.30
  ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jason      2027 F.... pulseaudio
  CurrentDmesg: [   12.393178] input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio1/serio2/input/input13
  Date: Tue May 14 21:06:12 2013
  HibernationDevice: RESUME=UUID=504647a2-9377-4a75-9669-218848b4ee6b
  InstallationDate: Installed on 2013-05-14 (0 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: LENOVO 3254CTO
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=fa9f5123-ae3f-48f6-9132-94a21bf14459 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/27/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: H0ET91WW (2.51 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 3254CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrH0ET91WW(2.51):bd02/27/2013:svnLENOVO:pn3254CTO:pvrThinkPadEdgeE430:rvnLENOVO:rn3254CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 3254CTO
  dmi.product.version: ThinkPad Edge E430
  dmi.sys.vendor: LENOVO

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