Removing gnome-power-manager stops this crash from occurring when logging into the session. After removing gnome-power-manager, xfce4 -power-manager does activate and dim my monitor per the preferences set in 'Xfce4 Power Manager' settings.
-- xfce4-power-manager 0.8.2-1 crashed with signal 5 in client_session_set_client_id() https://bugs.launchpad.net/bugs/404646 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