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[Joshua Lee <lee.joshwa@xxxxxxxxx>]

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https://bugs.launchpad.net/bugs/1287528

Title:
  No backlight interface on HP ENVY 23se-d494 AIO

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  No backlight slider is present and backlight hot keys do not function.
  No backlight interface is detected.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-14-generic 3.13.0-14.34
  ProcVersionSignature: Ubuntu 3.13.0-14.34-generic 3.13.5
  Uname: Linux 3.13.0-14-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  grogg      2134 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Mon Mar  3 21:58:55 2014
  HibernationDevice: RESUME=UUID=99d01de8-21f5-40d2-ad2d-55c129bdc93e
  InstallationDate: Installed on 2014-03-04 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140226)
  MachineType: Hewlett-Packard 23se-d494
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-14-generic.efi.signed root=UUID=1ff47b74-2577-42d0-b1a3-1d43600a0aa7 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-14-generic N/A
   linux-backports-modules-3.13.0-14-generic  N/A
   linux-firmware                             1.125
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/25/2013
  dmi.bios.vendor: AMI
  dmi.bios.version: 80.04
  dmi.board.asset.tag: 3CR40108R6
  dmi.board.name: 2B04
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 1.02
  dmi.chassis.asset.tag: 3CR40108R6
  dmi.chassis.type: 3
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnAMI:bvr80.04:bd09/25/2013:svnHewlett-Packard:pn23se-d494:pvr1.02:rvnHewlett-Packard:rn2B04:rvr1.02:cvnHewlett-Packard:ct3:cvr:
  dmi.product.name: 23se-d494
  dmi.product.version: 1.02
  dmi.sys.vendor: Hewlett-Packard

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