Same happens to me with a fresh install of gutsy on a Dell inspiron 9400 / E1705. When running on AC power if I change my monitor brightness to some value near 50%, after a minute it automatically turns to 100% without "Dim display when idle" checked.
-- Screen brightness resets to default (maximum) on idle with AC plugged in https://bugs.launchpad.net/bugs/137598 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