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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during
any development cycle it is impossible for us to review them all.
Therefore, we occasionally resort to using automated bots to request
further testing. This is such a request.

  With the recent release of this Ubuntu release, would like to confirm
if this bug is still present. Please test again with the newer kernel
and indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the
following commands in a terminal window:

    sudo apt-get update
    sudo apt-get dist-upgrade

If the bug still exists, change the bug status from Incomplete to
Confirmed. If the bug no longer exists, change the bug status from
Incomplete to Fix Released.

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 Thank you for your help, we really do appreciate it.


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

** Tags added: kernel-request-3.13.0-24.46

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https://bugs.launchpad.net/bugs/1243897

Title:
  [MacBookPro10,1] brightness setting has no effect

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After upgrade from 13.04 to 13.10, setting the screen brightness has
  no effect (either via the hotkeys, "Brightness & Lock" settings, or
  via /sys/devices/pnp0/00:07/backlight/gmux_backlight/brightness ).

  I'm using nvidia driver 319.32-0ubuntu7.
  I've tried Option "RegistryDwords" "EnableBrightnessControl=1" in xorg.conf as well as the kernel argument acpi_backlight=vendor .

  I have the following in /sys:
  $ find /sys -name brightness
  /sys/devices/pnp0/00:07/backlight/gmux_backlight/brightness
  /sys/devices/pci0000:00/0000:00:1c.0/0000:03:00.1/leds/mmc0::/brightness
  /sys/devices/platform/applesmc.768/leds/smc::kbd_backlight/brightness

  WORKAROUND: setpci -v -H1 -s 00:01.00 BRIDGE_CONTROL=0

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-12-generic 3.11.0-12.19
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  NonfreeKernelModules: wl nvidia
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  levi       2136 F.... pulseaudio
   /dev/snd/controlC0:  levi       2136 F.... pulseaudio
   /dev/snd/pcmC0D0p:   levi       2136 F...m pulseaudio
  Date: Wed Oct 23 21:25:29 2013
  HibernationDevice: RESUME=UUID=0c3f021e-1d6f-4ed4-a9e4-00ff145e91ef
  InstallationDate: Installed on 2012-08-24 (425 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64+mac (20120724.2)
  MachineType: Apple Inc. MacBookPro10,1
  MarkForUpload: True
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=2888919c-46a6-41be-874a-f3af7333ec15 ro quiet splash nomodeset nomodeset acpi_backlight=vendor vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-12-generic N/A
   linux-backports-modules-3.11.0-12-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-10-17 (5 days ago)
  dmi.bios.date: 08/08/2012
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP101.88Z.00EE.B02.1208081132
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-C3EC7CD22292981F
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro10,1
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-C3EC7CD22292981F
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP101.88Z.00EE.B02.1208081132:bd08/08/2012:svnAppleInc.:pnMacBookPro10,1:pvr1.0:rvnAppleInc.:rnMac-C3EC7CD22292981F:rvrMacBookPro10,1:cvnAppleInc.:ct10:cvrMac-C3EC7CD22292981F:
  dmi.product.name: MacBookPro10,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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