The audio and video policy groups have this for media-hub:
# Allow communications with media-hub
dbus (receive, send)
bus=session
path=/core/ubuntu/media/Service{,/**},
and this for thumbnailer:
# Allow communications with thumbnailer for retrieving album art
dbus (send)
bus=session
interface="org.freedesktop.DBus.Introspectable"
path="/com/canonical/Thumbnailer"
member="Introspect",
dbus (send)
bus=session
path="/com/canonical/Thumbnailer"
member=GetAlbumArt,
The audio and video policy groups have this for media-hub: /core/ubuntu/ media/Service{ ,/**},
# Allow communications with media-hub
dbus (receive, send)
bus=session
path=
and this for thumbnailer: "org.freedeskto p.DBus. Introspectable" "/com/canonical /Thumbnailer" "Introspect" , "/com/canonical /Thumbnailer" GetAlbumArt,
# Allow communications with thumbnailer for retrieving album art
dbus (send)
bus=session
interface=
path=
member=
dbus (send)
bus=session
path=
member=
What is needed for mediascanner2?