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 Ubuntu Desktop Bugs, 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1027676/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
