usb on notebook

SET CONTROL LINE STATE comes before SET LINE CODING, but it must not come at all on connection stage. See if the following allows to avoid the SET CONTROL LINE STATE, or the cause is in the driver: Try "systemctl stop ModemManager[.service]", but first find modemmanager via "ps" and after stopping ensure that it disappeared. If "systemctl ..." does not work, google how to stop modemmanager in ubuntu