** Changed in: fglrx-installer-updates (Ubuntu)
     Assignee: Anthony Wong (anthonywong) => Alberto Milone (albertomilone)

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https://bugs.launchpad.net/bugs/1296506

Title:
  [Dell Inspiron N5425] Unable to adjust brightness after suspend

Status in “fglrx-installer-updates” package in Ubuntu:
  New

Bug description:
  CID: 201206-11418 Dell Inspiron N5425

  With the proprietary driver:
  ii  fglrx-updates      2:13.125-0ubuntu0.0.1      Video driver for the AMD 
graphics accelerators
  The brightness cannot be adjusted after suspend.

  Steps:
  1. Install 12.04.4 + fglrx-updates, boot to desktop
  2. Suspend and wake the system up.
  3. Try to adjust the brightness with the hotkey and the applet

  Expected result:
  * The screen backlight could be adjusted.

  Actual result:
  * Brightness cannot be adjusted by any means, the brightness level indicator 
would change with the hotkey press

  Debugging Information:
  ubuntu@201206-11418:~/Desktop$ lspci -nn | grep 300
  00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. 
[AMD/ATI] Trinity [Radeon HD 7640G] [1002:9903]
  01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. 
[AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] [1002:6841]

  ubuntu@201206-11418:/sys/class/backlight$ l
  acpi_video0@  acpi_video1@

  Tried to write brightness level value into the "Brightness" file in
  the above directories, not working.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: fglrx-updates 2:13.125-0ubuntu0.0.1
  ProcVersionSignature: Ubuntu 3.11.0-15.25~precise1-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  Date: Fri Mar 21 06:09:27 2014
  InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release amd64 
(20140204)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: fglrx-installer-updates
  UpgradeStatus: No upgrade log present (probably fresh install)

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