sami@w520:~$ NetworkManager --print-config
# NetworkManager configuration: /etc/NetworkManager/NetworkManager.conf (lib: 10-globally-managed-devices.conf) (etc: default-wifi-powersave-on.conf)

[main]
plugins=ifupdown,keyfile,ofono

[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:wwan

[ifupdown]
managed=false

[connection]
wifi.powersave=3