Ubuntu: Fixing network interfaces not showing in GUI on Ubuntu Server

Ubuntu Server and Ubuntu Desktop use different network managers. Ubuntu Server uses networkd which doesn’t have a GUI component. So after adding a desktop to Ubuntu Server you won’t be able to see or change the configuration via the GUI by default.

For you to be able to see the network settings on the GUI you need to switch from networkd to NetworkManager.

Install NetworkManager:

apt install network-manager network-manager-gnome network-manager-openvpn network-manager-openconnect network-manager-openvpn-gnome

Check which systemd network daemons are active:

systemctl list-unit-files | grep -i network

Disable/stop networkd services:

systemctl disable systemd-networkd.service
systemctl disable networkd-dispatcher.service
systemctl stop systemd-networkd
systemctl stop systemd-networkd.socket
systemctl stop systemd-networkd.service
systemctl stop network-dispatcher.service

Remember that nmcli can be used for CLI NetworkManager control also.

Network interfaces are listed in yaml files in /etc/netplan/

Edit /etc/netplan/50-cloud-init.yaml and edit the line or add a line after the version: 2 entry to be renderer: Networkmanager.

network:
  ethernets:
    eno1:
      dhcp4: true
  version: 2
  renderer: NetworkManager

Check the changes and apply them:

netplan generate
netplan try / netplan apply

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