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

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LaunchPadGirl, could you please test a live environment of the latest
development release Trusty via http://cdimage.ubuntu.com/daily-
live/current/ ? If reproducible, please just make a comment to this.

** Description changed:

- Via my Asus G75VW, I've tried 12.04 & 13.10 and the F5 & F6 for screen
- brightness don't work.
+ Via my Asus G75VW with 12.04 or 13.10 (using nvidia 304.88 driver),
+ F5/F6 for screen brightness doesn't work.
  
  WORKAROUND: Using https://github.com/guillaumezin/nvidiabl one may change the brightness via:
  /usr/local/sbin/nvidiablctl down
  /usr/local/sbin/nvidiablctl up
  
  Also running like this manually works:
  echo 10 | sudo tee -a /sys/class/backlight/nvidia_backlight/brightness
  
  But acpi_listen and xev don't show any output so I'm not sure how I can
  map the F keys to /sys/class/backlight/nvidia_backlight/brightness.
  
  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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https://bugs.launchpad.net/bugs/1264104

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

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Via my Asus G75VW with 12.04 or 13.10 (using nvidia 304.88 driver),
  F5/F6 for screen brightness doesn't work.

  WORKAROUND: Using https://github.com/guillaumezin/nvidiabl one may change the brightness via:
  /usr/local/sbin/nvidiablctl down
  /usr/local/sbin/nvidiablctl up

  Also running like this manually works:
  echo 10 | sudo tee -a /sys/class/backlight/nvidia_backlight/brightness

  But acpi_listen and xev don't show any output so I'm not sure how I
  can map the F keys to
  /sys/class/backlight/nvidia_backlight/brightness.

  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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