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[Bug 1391153] Re: Thnikpad X220 - brightness control doesn't work

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Tue, 18 Nov 2014 02:40:03 -0000
Reply-to: Bug 1391153 <1391153@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

narel, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1391153

** Package changed: ubuntu => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

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

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https://bugs.launchpad.net/bugs/1391153

Title:
  Thnikpad X220 - brightness control doesn't work

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After upgrading to Ubuntu 14.10 brightness control no longer works on
  Lenovo Thinkpad X220. Fn+Home/Fn+End doesn't work, the only way is to
  echo value to:

  /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight/brightness

  I use Awesome WM, but it doesn't seem to be related to Awesome.

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