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[jtryon <jtryon@xxxxxxxxxxx>]

I switched up to "3.15.0-031500rc7-generic_3.15.0-031500rc7.201405251935_amd64" and that solved the issue!
Thanks.

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

** Tags added: kernel-fixed-upstream-3.15-rc7

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https://bugs.launchpad.net/bugs/1324688

Title:
  [Dell XPS 13 (L322X)] Backlight Disabled during and after fresh
  install

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I can just barely make out the screen in fresh 14.04 install.

  WORKAROUND: Boot with Legacy mode enabled in BIOS.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-27-generic 3.13.0-27.50
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  toast      1946 F.... pulseaudio
  Date: Thu May 29 12:52:54 2014
  HibernationDevice: RESUME=UUID=7aff82fa-6a4e-45ff-a86a-4d6ce1c5317f
  InstallationDate: Installed on 2014-05-29 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. XPS L322X
  ProcEnviron:
   LANGUAGE=en_CA:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_CA.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic.efi.signed root=UUID=d23ca36c-f8c6-4e18-a4e7-1c4a628bc859 ro quiet splash vt.handoff=7
  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-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/28/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd08/28/2013:svnDellInc.:pnXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: XPS L322X
  dmi.sys.vendor: Dell Inc.

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