Yeah, i read it, but the actually proposed solution doesn't work with the
new kernel and uefi.
Le 19 avr. 2014 17:20, "Bib" <email address hidden> a écrit :

> Guillaume, I didn't re-read the whole thread, but did you? At a time,
> the issue was said to be fixed for ubuntu installed over a BIOS MODE
> only, i.e. not over UEFI. Did you check this or do you already know
> you're in UEFI (only usefull I beleive for double boot with W7+)?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1163720
>
> Title:
>   Brightness control broken on XPS13 and 3.8.0-16, 3.8.0-22 and
>   3.11.0-12
>
> Status in The Linux Kernel:
>   Incomplete
> Status in “linux” package in Ubuntu:
>   Fix Released
> Status in “linux” source package in Precise:
>   Fix Released
> Status in “linux” source package in Quantal:
>   Fix Released
> Status in “linux” source package in Raring:
>   Fix Released
> Status in “linux” source package in Saucy:
>   Fix Released
>
> Bug description:
>   Since 3.8.0-16, the brightness control doesn’t work anymore.
>   The popup is displayed, so the shortcut keys do work correctly, but it
> has no effect on the actual brightness of the screen.
>
>   Switching back to 3.8.0-15 solves the issue.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 13.04
>   Package: linux-image-3.8.0-16-generic 3.8.0-16.26
>   ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5
>   Uname: Linux 3.8.0-16-generic x86_64
>   ApportVersion: 2.9.2-0ubuntu5
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  coucouf    1837 F.... pulseaudio
>   Date: Wed Apr  3 08:29:58 2013
>   DistributionChannelDescriptor:
>    # This is a distribution channel descriptor
>    # For more information see
> http://wiki.ubuntu.com/DistributionChannelDescriptor
>    canonical-oem-somerville-precise-amd64-20120703-2
>   HibernationDevice: RESUME=UUID=e49e9eae-f16f-45bb-ad2c-b6da5c0c6f6d
>   InstallationDate: Installed on 2013-03-23 (10 days ago)
>   InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary
> 20120703-15:08
>   MachineType: Dell Inc. Dell System XPS L322X
>   MarkForUpload: True
>   ProcEnviron:
>    TERM=xterm
>    PATH=(custom, no user)
>    XDG_RUNTIME_DIR=<set>
>    LANG=fr_FR.UTF-8
>    SHELL=/bin/bash
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-16-generic
> root=UUID=3f6858e1-d8f5-44c4-b8e9-5ab8b9639ba7 ro quiet splash vt.handoff=7
>   RelatedPackageVersions:
>    linux-restricted-modules-3.8.0-16-generic N/A
>    linux-backports-modules-3.8.0-16-generic  N/A
>    linux-firmware                            1.104
>   SourcePackage: linux
>   UpgradeStatus: Upgraded to raring on 2013-04-02 (0 days ago)
>   dmi.bios.date: 01/22/2013
>   dmi.bios.vendor: Dell Inc.
>   dmi.bios.version: A07
>   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.:bvrA07:bd01/22/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
>   dmi.product.name: Dell System XPS L322X
>   dmi.sys.vendor: Dell Inc.
>
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>