gentoo-laptop conf.d # /etc/init.d/bumblebee start
 * Setting up sddm ...                                                            [ ok ]
 * Starting VirtualGL ...
xauth:  file /var/run/sddm/{f5f0a22b-6280-4d72-bdd1-8b08578b9577} does not exist
xauth: (argv):1:  bad "add" command line                                          [ !! ]
 * ERROR: vgl failed to start
 * ERROR: cannot start bumblebee as vgl would not start