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[ishbalai <philiptibom@xxxxxxxxx>]

apport information

** Attachment added: "UdevDb.txt"
   https://bugs.launchpad.net/bugs/1460088/+attachment/4407112/+files/UdevDb.txt

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https://bugs.launchpad.net/bugs/1460088

Title:
  Backlight control does not work on Asus Zenbook Pro UX501JW / Nvidia
  Geforce GTX 960M

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hello!

  Backlight control does not work on Asus Zenbook Pro UX501JW / Nvidia
  Geforce GTX 960M.

  What I mean by this is that the hotkeys for the backlight does not do
  anything. The backlight can be manually set while running on the
  integrated intel graphics. (Not with hotkeys).

  The nvidia GPU is not detected until Nvidias official drivers are
  installed. And after installing that driver (any version) the
  backlight can not be changed at all.

  I hope this can be solved!
  --- 
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     2154 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     2154 F.... pulseaudio
  CasperVersion: 1.360
  DistroRelease: Ubuntu 15.04
  LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: ASUSTeK COMPUTER INC. N501JW
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/hostname.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper quiet splash ---
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-15-generic N/A
   linux-backports-modules-3.19.0-15-generic  N/A
   linux-firmware                             1.143
  Tags:  vivid
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 3.19.0-15-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 01/14/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N501JW.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N501JW
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN501JW.203:bd01/14/2015:svnASUSTeKCOMPUTERINC.:pnN501JW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN501JW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: N501JW
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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