File "/usr/bin/batterymon", line 522, in <module>
    pm = PowerManager()
  File "/usr/bin/batterymon", line 427, in __init__
    self.adapter = AcAdapter()
  File "/usr/bin/batterymon", line 46, in __init__
    DBusObject.__init__(self)
  File "/usr/bin/batterymon", line 39, in __init__
    hal_obj = self.bus.get_object('org.freedesktop.Hal', '/org/freedesktop/Hal/Manager')
  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 244, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 246, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 183, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 281, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Hal was not provided by any .service files