Thank you for your report and helping making Ubuntu better. Can you check out is bug #376924, specifically a link to a potential patch at: http://marc.info/?l=linux-acpi&m=124456088526538&w=2. If you are able, try that patch in acpi and report if it helps.
** Changed in: gnome-power-manager (Ubuntu) Status: New => Incomplete -- [LENOVO 0768BXG] Brightness does not increase properly https://bugs.launchpad.net/bugs/355480 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs