Dow Hurst, this closed report is not scoped to your problem. Hence, it will 
help immensely if you use the computer the problem is reproducible with, and 
provide necessary debugging logs by filing a new report with Ubuntu via a 
terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

** No longer affects: linux-lts-xenial (Ubuntu)

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https://bugs.launchpad.net/bugs/1041116

Title:
  Brightness hotkeys have no effect on Clevo laptop

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Invalid

Bug description:
  
  ******** the bug is fixed with kernel 3.7.0.


  On Ubuntu 11.10, and 12.04, and even on 12.04 with mainline kernel
  3.4, and 3.6 , the brightness hotkeys (decrease=Fn+F8 , and
  increase=Fn+F9) have no effect on my Clevo laptop.

  - however, brightness control via "System Settings" -> "Brightness and lock" 
menu (in 12.04) work out-of-the-box.
  - when adding the "acpi_osi=" option, hotkeys work , but the "Brightness and 
lock" menu has no effect any more.
  - more information on http://ubuntuforums.org/showthread.php?t=2046843

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-26-generic 3.2.0-26.41
  ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
  Uname: Linux 3.2.0-26-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  yyy        1571 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7e00000 irq 43'
     Mixer name : 'Intel CougarPoint HDMI'
     Components : 'HDA:10ec0269,15584140,00100100 
HDA:80862805,15584140,00100000'
     Controls      : 27
     Simple ctrls  : 13
  Date: Fri Aug 24 11:15:07 2012
  HibernationDevice: RESUME=UUID=56eb9210-7151-425c-93dd-b92af2e792ba
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
  MachineType: CLEVO CO. W240HU/W250HUQ
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic 
root=UUID=789016b1-f3f0-4b76-be92-afa2dbb36c5e ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-26-generic N/A
   linux-backports-modules-3.2.0-26-generic  N/A
   linux-firmware                            1.79
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/09/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.4
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: W240HU/W250HUQ
  dmi.board.vendor: CLEVO CO.
  dmi.board.version: D02A
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: No Enclosure
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd08/09/2011:svnCLEVOCO.:pnW240HU/W250HUQ:pvrNotApplicable:rvnCLEVOCO.:rnW240HU/W250HUQ:rvrD02A:cvnNoEnclosure:ct10:cvrN/A:
  dmi.product.name: W240HU/W250HUQ
  dmi.product.version: Not Applicable
  dmi.sys.vendor: CLEVO CO.

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