XFCE not loading KNetworkManager on startup

After switching from KDE to XFCE, knetworkmanager doesn’t automatically start when you log in. If you open it yourself, you magically get internet. How can I add KNetworkManager to the programs automatically started by XFCE?

I’m on 11.3

Thanks.

as root:
cp /usr/share/applications/kde4/knetworkmanager.desktop /etc/xdg/autostart

Not sure it is that clever, as it is a KDE frontend.