I have ha several friends report that using xfce on fedora 3.10.3 also
resolves the problem. I am curious if it is gnome related.

On Thursday, August 1, 2013, c0h1b4 wrote:

> I confirm after several tests that v3.11.rc3-saucy fixes the problem. It
> works perfectly now. Great job.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/954661
>
> Title:
>   backlight brightness not adjustable by default on Dell XPS 13
>
> Status in Dell Sputnik:
>   New
> Status in “linux” package in Ubuntu:
>   Fix Released
> Status in “linux” source package in Precise:
>   In Progress
> Status in “linux” source package in Quantal:
>   In Progress
> Status in “linux” source package in Raring:
>   Fix Released
>
> Bug description:
>   The backlight brightness is not changeable by default on a Dell XPS 13
> running Precise beta 1 (or later). If I run the following command as root,
> I can adjust the brightness:
>       /bin/echo 0 > /sys/class/baclight/intel_backlight/brightness
>   However, I must do this whenever I turn on the computer or resume it
> from suspend.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 12.04
>   Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
>   ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
>   Uname: Linux 3.2.0-18-generic x86_64
>   .tmp.unity.support.test.0:
>
>   ApportVersion: 1.94.1-0ubuntu2
>   Architecture: amd64
>   CompizPlugins:
> [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
>   CompositorRunning: None
>   Date: Tue Mar 13 20:56:36 2012
>   DistUpgraded: Fresh install
>   DistroCodename: precise
>   DistroVariant: ubuntu
>   ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in
> Ubuntu
>   GraphicsCard:
>    Intel Corporation 2nd Generation Core Processor Family Integrated
> Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
>      Subsystem: Dell Device [1028:052e]
>   InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64
> (20120301)
>   MachineType: Dell Inc. Dell System XPS L321X
>   ProcEnviron:
>    TERM=xterm
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic
> root=UUID=6a0a6c9c-fb29-446a-8806-e431d38c95e8 ro quiet splash
> i915.i915_enable_fbc=1 i915.i915_enable_rc6=1 pcie_aspm=force vt.handoff=7
>   SourcePackage: xserver-xorg-video-intel
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 01/30/2012
>   dmi.bios.vendor: Dell Inc.
>   dmi.bios.version: A02
>   dmi.board.name: 085X6F
>   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.:bvrA02:bd01/30/2012:svnDellInc.:pnDellSystemXPSL321X:pvr:rvnDellInc.:rn085X6F:rvrA00:cvnDellInc.:ct8:cvr0.1:
>   dmi.product.name: Dell System XPS L321X
>   dmi.sys.vendor: Dell Inc.
>   version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1
>   version.ia32-libs: ia32-libs N/A
>   version.libdrm2: libdrm2 2.4.30-1ubuntu1
>   version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu2
>   version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
>   version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu2
>   version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu6
>   version.xserver-xorg-input-evdev: xserver-xorg-input-evdev
> 1:2.6.99.901+git20120126-0ubuntu2
>   version.xserver-xorg-video-ati: xserver-xorg-video-ati
> 1:6.14.99~git20111219.aacbd629-0ubuntu2
>   version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.17.0-1ubuntu4
>   version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
> 1:0.0.16+git20111201+b5534a1-1build2
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/dell-sputnik/+bug/954661/+subscriptions
>


-- 
 - Brian Semrad