Public bug reported:
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)
** Affects: fglrx-installer-updates (Ubuntu)
Importance: Undecided
Assignee: Anthony Wong (anthonywong)
Status: New
** Tags: 201206-11418 amd64 apport-bug block-hwcert-enablement blocks-hwcert
precise running-unity taipei-lab
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to fglrx-installer-updates in Ubuntu.
https://bugs.launchpad.net/bugs/1296506
Title:
[Dell Inspiron N5425] Unable to adjust brightness after suspend
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer-updates/+bug/1296506/+subscriptions
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