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[Norbert <342942@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1270579 ***
    https://bugs.launchpad.net/bugs/1270579

** This bug is no longer a duplicate of bug 35223
   Laptop TFT monitor - brightness level is not saved
** This bug has been marked a duplicate of bug 1270579
   Ubuntu should have an upstart job for saving/restoring backlight level on laptops

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https://bugs.launchpad.net/bugs/342942

Title:
  Backlight level is inconsistent with actual backlight after S3 suspend
  resume

Status in gnome-power-manager package in Ubuntu:
  New

Bug description:
  Whenever I resume from suspend, my backlight level is at 100%. If I
  make an adjustment to the level using gnome-power-manager it jumps to
  what g-p-m thinks it should be.

  Steps to reproduce:

  1. Decrease backlight level to e.g. 10%
  2. Suspend
  3. Resume

  Expected result: backlight is at 10%

  Actual result: backlight is at 100%, but g-p-m thinks still 10%.
  "Increasing" the brightness with the keyboard sets it to 20%.

  It's possible that this only affects mbp_nvidia_bl

  Linux should resume with the same backlight level it had when it
  suspended, or in any case, g-p-m should not let its internal level go
  out of sync.

  ProblemType: Bug
  Architecture: amd64
  DistroRelease: Ubuntu 9.04
  MachineType: Apple Inc. MacBookPro3,1
  NonfreeKernelModules: nvidia
  Package: linux-image-2.6.28-6-generic 2.6.28-6.17
  ProcCmdLine: root=UUID=7d1e2f50-4756-49ea-94f5-22e91fe0d377 ro quiet splash
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.28-6.17-generic
  SourcePackage: linux
  UnreportableReason: This is not a genuine Ubuntu package


  original report:
  Binary package hint: gnome-power-manager

  gnome-power-manager doesn't handle the standby well,
  normally it adjusted to have 50% brightness only on battery power, if I unplug the AC it works fine, but after resuming from standby I get my machine back with 100% brightness. Strangely the FN Keys are working ti dim it back.

  I would expect gnome-power at minimum to see that there is no AC and
  auto dim to 50% b. if it doesn't recognize the previous settings
  before standyby.

  If I open gnome-power manualy after resuming, by right clicking on the battery icon in status bar it dims to 50%
  So could it be possible that gnome-power is paused after standby?

  using up to date 8.10 i386 Desktop with  GnomePower 2.24.0

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