(gnome-settings-daemon:1439): GnomeDesktop-WARNING **: could not get output property for VBOX0, rc: 15
(gnome-settings-daemon:1439): GnomeDesktop-WARNING **: could not get output property for VBOX0, rc: 15
(gnome-settings-daemon:1439): GnomeDesktop-WARNING **: could not get output property for VBOX0, rc: 15
(gnome-settings-daemon:1439): GnomeDesktop-WARNING **: could not get output property for VBOX0, rc: 15
(gnome-settings-daemon:1439): GnomeDesktop-WARNING **: could not get output property for VBOX0, rc: 15
(gnome-settings-daemon:1439): GnomeDesktop-WARNING **: could not get output property for VBOX0, rc: 15
(gnome-settings-daemon:1439): GnomeDesktop-WARNING **: could not get output property for VBOX0, rc: 15
(gnome-settings-daemon:1439): GLib-CRITICAL **: g_variant_new_string: assertion `string != NULL' failed