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[Launchpad Bug Tracker <862474@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gnome-settings-daemon - 3.2.0-0ubuntu4

---------------
gnome-settings-daemon (3.2.0-0ubuntu4) oneiric; urgency=low

  * debian/patches/00git_dont_sleep_on_idle_by_default.patch:
    - Don't sleep on idle by default (LP: #860485)
  * debian/patches/00git_dont_revert_pre_idle_brigthness.patch:
    - Do not revert to the pre-idle brightness if idle dimming is disabled
  * debian/patches/50_add_dell_backlight.patch:
    - Add 'dell_backlight' module to gsd-backlight-helper (LP: #862474)
 -- Rodrigo Moya <rodrigo.moya@xxxxxxxxxxxxx>   Thu, 29 Sep 2011 16:47:57 +0200

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

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https://bugs.launchpad.net/bugs/862474

Title:
  Backlight control for "dell_backlight" is missing in gsd-backlight-
  helper

Status in Gnome Settings Daemon:
  New
Status in “gnome-settings-daemon” package in Ubuntu:
  Fix Released
Status in “gnome-settings-daemon” source package in Oneiric:
  Fix Released

Bug description:
  Hi,

  Since a quite a while backlight management on my notebook (Dell
  Latitude D830) is quite broken. It started when a patch to manage the
  backlight in the kernel intel-driver was introduced.

  Here is the deal:

  My notebook normally uses the kernel interface "dell_backlight". This
  worked perfectly until the above patch was introduced. New gsd-
  backlight-helper chooses "intel_backlight" as the standard interface.
  When using this, i can still control the backlight but because
  "intel_backlight" assumes 255 steps instead of the correct 7 steps of
  "dell_backlight", "gnome-settings-daemon" can't correctly set and get
  the values.

  After patching the file "gsd-backlight-helper.c" (Adding
  "dell_backlight as an additional kernel-interface) the backlight
  management is back to normal. Please see the attachment for more
  details.

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