I just found out that the applet button works again, when setting the dim property in the battery-mode to 0 % in the power-managment settings :)
-- [Gutsy]Brightness applet not working in Gutsy (worked in Feisty) https://bugs.launchpad.net/bugs/134756 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs