sebastien@cherry:~ >> sudo /usr/lib/policykit-1/polkitd                     (5)
Registering null backend at priority -10
** (process:18733): DEBUG: Added `/var/lib/polkit-1/localauthority/10-vendor.d' as a local authorization store
** (process:18733): DEBUG: Added `/etc/polkit-1/localauthority/10-vendor.d' as a local authorization store
** (process:18733): DEBUG: Added `/var/lib/polkit-1/localauthority/20-org.d' as a local authorization store
** (process:18733): DEBUG: Added `/etc/polkit-1/localauthority/20-org.d' as a local authorization store
** (process:18733): DEBUG: Added `/var/lib/polkit-1/localauthority/30-site.d' as a local authorization store
** (process:18733): DEBUG: Added `/etc/polkit-1/localauthority/30-site.d' as a local authorization store
** (process:18733): DEBUG: Added `/var/lib/polkit-1/localauthority/50-local.d' as a local authorization store
** (process:18733): DEBUG: Added `/etc/polkit-1/localauthority/50-local.d' as a local authorization store
** (process:18733): DEBUG: Added `/var/lib/polkit-1/localauthority/90-mandatory.d' as a local authorization store
** (process:18733): DEBUG: Added `/etc/polkit-1/localauthority/90-mandatory.d' as a local authorization store
** (process:18733): DEBUG: Monitoring `/var/lib/polkit-1/localauthority' for changes
** (process:18733): DEBUG: Monitoring `/etc/polkit-1/localauthority' for changes
Using authority class PolkitBackendLocalAuthority

(process:18733): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(process:18733): GLib-GObject-CRITICAL **: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed

(process:18733): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(process:18733): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(process:18733): GLib-GObject-CRITICAL **: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Error registering authority: Could not become primary name owner for org.freedesktop.PolicyKit1** (process:18733): DEBUG: Purged all local authorization stores
sebastien@cherry:~ >> sudo /usr/lib/policykit-1/polkitd                                                                                                       (6)
Registering null backend at priority -10
** (process:18806): DEBUG: Added `/var/lib/polkit-1/localauthority/10-vendor.d' as a local authorization store
** (process:18806): DEBUG: Added `/etc/polkit-1/localauthority/10-vendor.d' as a local authorization store
** (process:18806): DEBUG: Added `/var/lib/polkit-1/localauthority/20-org.d' as a local authorization store
** (process:18806): DEBUG: Added `/etc/polkit-1/localauthority/20-org.d' as a local authorization store
** (process:18806): DEBUG: Added `/var/lib/polkit-1/localauthority/30-site.d' as a local authorization store
** (process:18806): DEBUG: Added `/etc/polkit-1/localauthority/30-site.d' as a local authorization store
** (process:18806): DEBUG: Added `/var/lib/polkit-1/localauthority/50-local.d' as a local authorization store
** (process:18806): DEBUG: Added `/etc/polkit-1/localauthority/50-local.d' as a local authorization store
** (process:18806): DEBUG: Added `/var/lib/polkit-1/localauthority/90-mandatory.d' as a local authorization store
** (process:18806): DEBUG: Added `/etc/polkit-1/localauthority/90-mandatory.d' as a local authorization store
** (process:18806): DEBUG: Monitoring `/var/lib/polkit-1/localauthority' for changes
** (process:18806): DEBUG: Monitoring `/etc/polkit-1/localauthority' for changes
Using authority class PolkitBackendLocalAuthority

(process:18806): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(process:18806): GLib-GObject-CRITICAL **: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed

(process:18806): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(process:18806): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(process:18806): GLib-GObject-CRITICAL **: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Error registering authority: Could not become primary name owner for org.freedesktop.PolicyKit1** (process:18806): DEBUG: Purged all local authorization stores