Try out the following commands: sudo service networking restart sudo /etc/init.d/networking restart or nmcli device set [device] managed true Check Networking Status /etc/init.d/networking status Stop Networking sudo /etc/init.d/networking stop Start Networking sudo /etc/init.d/networking start Restart Networking /etc/init.d/networking restart To start Network Manager : service NetworkManager start or systemctl start NetworkManager To stop Network Manager: service NetworkManager stop… Read more →