Hello Vincent, or anyone else affected,

Accepted gnome-settings-daemon into zesty-proposed. The package will
build now and be available at https://launchpad.net/ubuntu/+source
/gnome-settings-daemon/3.24.2-0ubuntu0.1 in a few hours, and then in the
-proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: gnome-settings-daemon (Ubuntu Zesty)
       Status: In Progress => Fix Committed

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1683445

Title:
  E6430 brightness control not working

Status in GNOME Settings Daemon:
  Fix Released
Status in Linux:
  Won't Fix
Status in gnome-settings-daemon package in Ubuntu:
  Fix Released
Status in linux package in Ubuntu:
  Invalid
Status in unity-settings-daemon package in Ubuntu:
  Triaged
Status in gnome-settings-daemon source package in Zesty:
  Fix Committed
Status in unity-settings-daemon source package in Zesty:
  Triaged

Bug description:
  Impact
  ------
  It looks like GNOME's brightness control simply used the first backlight 
device it saw instead of one currently in use. This meant that the brightness 
control would not work on some computers with multiple GPUs.

  Test Case
  ---------
  From Ubuntu GNOME 17.04 on a dual-GPU computer, install the update.
  Restart.
  Does the brightness control now work correctly?

  Regression Potential
  --------------------
  This looks like a minimal fix for this issue. It was accepted as part of 
gnome-settings-daemon 3.24.2 which all GNOME 3.24 distros  will be upgrading to.

  Original Bug Report
  -------------------
  The Dell E6430 with Nvidia Optimus enables in BIOS, using the Open Source 
Nouveau driver shows the brightness slider moving but does not affect the 
brightness.

  When using the kernel boot option acpi_backlight=vendor , the
  brightness control works.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: linux-image-4.10.0-19-generic 4.10.0-19.21
  ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
  Uname: Linux 4.10.0-19-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.4-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     2081 F.... pulseaudio
  CurrentDesktop: Unity:Unity7
  Date: Mon Apr 17 20:00:56 2017
  HibernationDevice: RESUME=UUID=66528b53-0f42-4043-9ff8-da8f86036be6
  InstallationDate: Installed on 2017-04-10 (7 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Beta amd64 (20170321)
  MachineType: Dell Inc. Latitude E6430
  ProcFB:
   0 nouveaufb
   1 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-19-generic.efi.signed 
root=UUID=4e08c33d-f8cf-4159-a559-a0463d67b96c ro quiet splash 
acpi_backlight=vendor vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.10.0-19-generic N/A
   linux-backports-modules-4.10.0-19-generic  N/A
   linux-firmware                             1.164
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/18/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A18
  dmi.board.name: 0H3MT5
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA18:bd01/18/2016:svnDellInc.:pnLatitudeE6430:pvr01:rvnDellInc.:rn0H3MT5:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E6430
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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