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[RK <1392016@xxxxxxxxxxxxxxxxxx>]

Hi,
I've tested the new 3.18 kernel 
($ uname -a
Linux lina-UL30VT 3.18.0-031800rc4-generic #201411091835 SMP Sun Nov 9 23:36:36 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux)

However, the bug persists. Backlight control does not work.

Furthermore, the touchpad control cannot be turned off with the hotkey,
nor does the indicator bubble pop up (I understand that this perhaps
should be reported as a separate bug)

Still, the indicator bubble for backlight control does pop up, but has
no effect on actual backlight.

** Tags added: kernel-bug-exists-upstream

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https://bugs.launchpad.net/bugs/1392016

Title:
  [Asus UL30VT] Backlight control does not work

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The backlight control on my Asus UL30VT has not worked for quite a
  while. It used to work, a few ubuntu versions ago. The backlight
  control bubble does show up when the function keys on the laptop are
  pressed.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-39-generic 3.13.0-39.66
  ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
  Uname: Linux 3.13.0-39-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  lina       2081 F.... pulseaudio
   /dev/snd/controlC0:  lina       2081 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Nov 12 20:20:31 2014
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=c8002bb0-2b05-4952-bc8b-bfcd29ac6117
  InstallationDate: Installed on 2013-02-26 (623 days ago)
  InstallationMedia: This
  MachineType: ASUSTeK Computer Inc. UL30VT
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-39-generic root=UUID=ff44dc17-e11a-4d44-8ab6-bf188f64ed83 ro quiet splash acpi_backlight=vendor vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-39-generic N/A
   linux-backports-modules-3.13.0-39-generic  N/A
   linux-firmware                             1.127.8
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2014-07-20 (115 days ago)
  dmi.bios.date: 07/14/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 211
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UL30VT
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr211:bd07/14/2010:svnASUSTeKComputerInc.:pnUL30VT:pvr1.0:rvnASUSTeKComputerInc.:rnUL30VT:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: UL30VT
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.

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