Moving to gnome power manager since the brightness controls are not displayed on the System->Preferences->Power Management.
Investigating further to see what enables this option. ** Changed in: Ubuntu Sourcepackagename: None => gnome-power-manager -- Screen does not dim when on battery, Acer Aspire 5601AWLMi Laptop https://launchpad.net/bugs/67322 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
