An Alternative to Ubuntu network manager is systemd-networkd, which is the default backend service in Ubuntu server 18.04. So if you want to disable the NetworkManager, then the networkd service should be enabled, while it is better to disable networkd service when network manager is running. Disable Network Manager and enable systemd-networkd

How to disable Network Manager on Linux | Bots! Disable Network Manager for a Particular Network Interface on Debian, Ubuntu or Linux Mint To disable Network Manager only for eth1 on Debian, Ubuntu or Linux Mint, you can do the following. First, open the Network Manager configuration file in /etc/NetworkManager with a text editor, and set “managed=false”, typically shown under [ifupdown]. How to Install a Desktop (GUI) on an Ubuntu Server GNOME. To install GNOME, start by launching tasksel: tasksel. A colorful interface will launch. Use … Ubuntu Linux view status of my network interfaces card

Aug 02, 2016

How to Set Up Remote Desktop on Ubuntu Jul 24, 2019 DebuggingNetworkManager - Ubuntu Wiki Aug 02, 2016

my problem is because after an upgrade, the network-manager is running, but, not is possible to select vpns, interfaces, nothing. when push in connection information say no valid connections.

How to Install a Desktop (GUI) on an Ubuntu Server