Cellular service

If your controller has a Cellular modem it may still have to be enabled for it to actually work. The power state of the modem is controlled with the go-wwan systemd service. To enable the modem simply enable the service with:

systemctl enable go-wwan

The modem takes some time to boot, information about the modem can be seen with the ModemManager tool.

The state can also be soft managed by NetworkManager with:

nmcli radio wwan <on|off>

This will keep the modem powered but just turn the radio off, the go-wwan service will cut power to the modem completely.

This service must also be enabled to use the GPS functionality as it needs the modem to be powered on.