Uninstall network-manager and its dependencies sudo apt-get remove --auto-remove network-manager. This will remove the network-manager package and any other dependant packages which are no longer needed. Purging your config/data too. If you also want to delete your local/config files for network-manager then this will work.
Jul 30, 2019 · 1. Download the installer script with the command wget https://github.com/opennms-forge/opennms-install/archive/master.zip. 2. Install unzip with the command sudo apt-get install unzip -y. 3. May 05, 2020 · More information about Network Manager is available in Gnome website and wiki. Installation. NetworkManager should be installed by default on Ubuntu Desktop installs, as well as most flavours of Ubuntu. To install NetworkManager: sudo apt-get install network-manager. To install the GNOME applet / indicator: sudo apt-get install network-manager-gnome 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.
How to Configure Network Settings in Ubuntu
2018-03-26 - Jeremy Bicha