Debian Hardware :: Bumblebeed Service Doesn't Start

I've installed bumblebee following this : URL...But i think bumblebeed daemon doesn't start.

if I do:
Code: Select all# service bumblebeed start
or
Code: Select all# service bumblebeed stop
or
Code: Select all# /etc/init.d/bumblebeed start
ecc.
i got no output. No errors... nothing.

but if I use another service it works...for example:

Code: Select all# /etc/init.d/network-manager start
[ ok ] Starting network connection manager: NetworkManager.