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[Jeremie Tamburini <jeremie.tamburini@xxxxxxxxx>]

Right, this should be OK http://marc.info/?l=linux-
acpi&m=140178030214298&w=2

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https://bugs.launchpad.net/bugs/1318299

Title:
  [Fujitsu Lifebook A512] Brightness hot keys Fn+F6/Fn+F7 don't work

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  Pressing Fn+F6 or Fn+F7 the brightness doesn't change.

  WORKAROUND: Execute at a terminal:
  for i in /sys/class/backlight/*; do echo $i;cat $i/brightness;cat $i/max_brightness;done

  shows this output:
  /sys/class/backlight/acpi_video0
  1
  100
  /sys/class/backlight/intel_backlight
  4882
  4882

  Create /usr/share/X11/xorg.conf.d/20-intel.conf to set the "intel_backlight" interface, which will make the brightness shortcuts Fn+F6 and Fn+F7 work:
  Section "Device"
          Identifier "card0"
          Driver "intel"
          Option "Backlight" "intel_backlight"
          BusID "PCI:0:2:0"
  EndSection

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.47
  ProcVersionSignature: Ubuntu 3.13.0-24.47-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:  pinguinux   1731 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun May 11 10:21:22 2014
  HibernationDevice: RESUME=UUID=f6e9afa5-5b2f-4c3d-af00-aff1122b6fe6
  InstallationDate: Installed on 2014-04-18 (22 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: FUJITSU LIFEBOOK A512
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=1cd50414-50f8-4f1c-9133-e7f3375c0415 ro 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
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/23/2013
  dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
  dmi.bios.version: Version 1.16
  dmi.board.name: FJNBB29
  dmi.board.vendor: FUJITSU
  dmi.chassis.type: 10
  dmi.chassis.vendor: FUJITSU
  dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.16:bd10/23/2013:svnFUJITSU:pnLIFEBOOKA512:pvr:rvnFUJITSU:rnFJNBB29:rvr:cvnFUJITSU:ct10:cvr:
  dmi.product.name: LIFEBOOK A512
  dmi.sys.vendor: FUJITSU

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