Chis, I have just done some investigations. We are propably wrong here.
Backlight problems should be reported following this guide: https://wiki.ubuntu.com/Kernel/Debugging/Backlight#Report_Minimum_Requirements There is a list of bugs that are related for this on Quantal: https://bugs.launchpad.net/ubuntu/+bugs?field.searchtext=backlight&orderby=-importance&search=Search&field.status%3Alist=NEW&field.status%3Alist=CONFIRMED&field.status%3Alist=TRIAGED&field.status%3Alist=INPROGRESS&field.status%3Alist=FIXCOMMITTED&field.status%3Alist=INCOMPLETE_WITH_RESPONSE&field.status%3Alist=INCOMPLETE_WITHOUT_RESPONSE&assignee_option=any&field.assignee=&field.bug_reporter=&field.bug_commenter=&field.subscriber=&field.structural_subscriber=&field .component-empty- marker=1&field.tag=quantal&field.tags_combinator=ANY&field .status_upstream-empty- marker=1&field.has_cve.used=&field.omit_dupes.used=&field.omit_dupes=on&field.affects_me.used=&field.has_no_package.used=&field.has_patch.used=&field.has_branches.used=&field.has_branches=on&field.has_no_branches.used=&field.has_no_branches=on&field.has_blueprints.used=&field.has_blueprints=on&field.has_no_blueprints.used=&field.has_no_blueprints=on I have done so, which is elaborious work. My report for my laptop can be found at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1054647 With respect to this I close this here as invalid, because it missed the cause of the problem completely. Following the guide I have fould we must file separate bugs anyway. ** Changed in: gnome-control-center (Ubuntu) Status: Confirmed => Invalid -- 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/1027676 Title: gnome-control-center brightness bar has no effect on laptop Status in “gnome-control-center” package in Ubuntu: Invalid Bug description: I am on Ubuntu12.10 Quantal 64bit. Using Software-Center Lock and Brighness, shows a bar for adaption of brightness to the user.(On a laptop system) This bar do not do! Any sliding of it has no effect of the screenbrightness. Reproducing: 1.Install Quantal to a laptop(may be a HP Enterprise 655) 2.Open up system setting 3.Choose Lock and Brightness 4.Sliding the brightness bar which is there. 5.See that it has no effect. Additional: I have tried several modifications of the reproducing steps - also arround the enery setting. All has no effect. This should be easy to reproduce on every laptop system. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: gnome-control-center 1:3.4.2-0ubuntu6 ProcVersionSignature: Ubuntu 3.5.0-5.5-generic 3.5.0-rc7 Uname: Linux 3.5.0-5-generic x86_64 ApportVersion: 2.4-0ubuntu4 Architecture: amd64 Date: Sun Jul 22 20:04:15 2012 ExecutablePath: /usr/bin/gnome-control-center InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120722) ProcEnviron: PATH=(custom, no username) LANG=de_DE.UTF-8 SHELL=/bin/bash SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) XsessionErrors: (compiz:1780): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed (gnome-settings-daemon:1760): GLib-CRITICAL **: g_variant_get_int32: assertion `g_variant_is_of_type (value, G_VARIANT_TYPE_INT32)' failed (thunderbird:3980): Gtk-CRITICAL **: IA__gtk_clipboard_set_with_data: assertion `targets != NULL' failed (gnome-control-center:5121): background-cc-panel-WARNING **: Could not load /usr/share/themes/Adwaita/index.theme: Datei oder Verzeichnis nicht gefunden To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1027676/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

