My IBM T42 also dims when AC power is unplugged and then dims again when AC power is restored. When it hits the minimum setting, plugging in then brings brightness up one level. It's like it doesn't know the current setting, because if I max the brightness before plugging in it goes to the same, lower value as before (one up from zero).
** Attachment added: "lshal.log.txt" http://launchpadlibrarian.net/12851408/lshal.log.txt -- gnome-power-manager does not restore brightness after idle dim (2.22.0-0ubuntu1) https://bugs.launchpad.net/bugs/203494 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