the dbus dependency exists by design, the package installs dbus alongside if its not there, if you wish to run your session without dbus you are free to, but please understand that dbus is an integral part of modern desktops, so apps might not work if they cant communicate through it.
** Changed in: gnome-power-manager (Ubuntu) Status: Confirmed => Rejected -- This program cannot start until you start the dbus session service. https://launchpad.net/bugs/58344 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs