Thank you for taking the time to report this bug and helping to make Ubuntu better. This is a known problem with some ACPI backlight drivers.
Please read this article in order to debugging more this issue https://wiki.ubuntu.com/Kernel/Debugging/Backlight Please provide the additional information that are needed according to above article. Best Regards NikTh ** Package changed: gnome-control-center (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. Status in Ubuntu: Incomplete Bug description: On my laptop (acer aspire one V5-131) which uses Ubuntu 13.04, the change of the brightness settings have no effect on the brightness in the settings application. When I press the shortcut for changing the brightness (Fn+Left & Fn+Right), the notification of the new brightness level is correctly displayed but again it has no effect on the brightness of the screen (and it neither update the level in the settings application). Please, see in the attached file (Brightness.txt) what I do for changing the brightness on my computer from the console. I don't know anything about the settings software stack but since it works from the console I don't think it is a driver problem but rather a software problem somewhere or maybe a missing symlink. Though the keyboard shortcut are not working properly, the problem could also be below gnome-control-center. Please contact me for any question or if I can be of any help for the correction. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: gnome-control-center 1:3.6.3-0ubuntu24.1 ProcVersionSignature: Ubuntu 3.8.0-33.48-generic 3.8.13.11 Uname: Linux 3.8.0-33-generic i686 ApportVersion: 2.9.2-0ubuntu8.5 Architecture: i386 Date: Sun Nov 24 07:39:09 2013 EcryptfsInUse: Yes ExecutablePath: /usr/bin/gnome-control-center InstallationDate: Installed on 2013-06-10 (166 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424) MarkForUpload: True SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) usr_lib_gnome-control-center: deja-dup 26.0-0ubuntu1 gnome-control-center-signon 0.1.6bzr13.04.05-0ubuntu1.1 gnome-control-center-unity 1.3daily13.06.19~13.04-0ubuntu1 indicator-datetime 12.10.3daily13.03.26-0ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
