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[Bug 1264104] Re: 10de:0fd4 Asus G75VW F5/F6 doesn't change screen brightness

 

LaunchPadGirl, thank you for reporting this and helping make Ubuntu better. Could you please comment on if using the following kernel boot parameters individually allow you to adjust the backlight:
acpi_backlight=vendor
video.use_bios_initial_backlight=0

For more on utilizing kernel boot parameters, please see
https://wiki.ubuntu.com/Kernel/KernelBootParameters .

** Package changed: linux-lts-raring (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

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

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https://bugs.launchpad.net/bugs/1264104

Title:
  10de:0fd4 Asus G75VW F5/F6 doesn't change screen brightness

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Via my Asus G75VW, I've tried 12.04 & 13.10 and the F5 & F6 for screen
  brightness don't work.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.8.0-34-generic 3.8.0-34.49~precise1
  ProcVersionSignature: Ubuntu 3.8.0-34.49~precise1-generic 3.8.13.12
  Uname: Linux 3.8.0-34-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.8.0-34-generic.
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog]
     Subdevices: 2/2
     Subdevice #0: subdevice #0
     Subdevice #1: subdevice #1
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  sar        1704 F.... pulseaudio
   /dev/snd/controlC0:  sar        1704 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7310000 irq 44'
     Mixer name	: 'VIA VT1802'
     Components	: 'HDA:11068446,10431487,00100000'
     Controls      : 40
     Simple ctrls  : 18
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xf7080000 irq 17'
     Mixer name	: 'Nvidia GPU 42 HDMI/DP'
     Components	: 'HDA:10de0042,10432119,00100100'
     Controls      : 14
     Simple ctrls  : 2
  Date: Wed Dec 25 03:03:22 2013
  HibernationDevice: RESUME=UUID=1a59e00b-3953-4933-9a27-791a963642fc
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
  MachineType: ASUSTeK COMPUTER INC. G75VW
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-34-generic root=UUID=97cd6fd3-61e8-465f-8ebb-a54732d37062 ro quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-34-generic N/A
   linux-backports-modules-3.8.0-34-generic  N/A
   linux-firmware                            1.79.9
  SourcePackage: linux-lts-raring
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/07/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: G75VW.223
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: G75VW
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrG75VW.223:bd01/07/2013:svnASUSTeKCOMPUTERINC.:pnG75VW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnG75VW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: G75VW
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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