Well, a workaround is to kill gnome-power-manager (or somehow make it not to load). Then you have full manual control of the backlight. The only problem I have seen is the batteriy indicator disappears, but can be replaced by a gnome battery applet instead.
-- Backlight no longer under my control on battery https://bugs.launchpad.net/bugs/131885 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
