Comment 17 for bug 1772859

My version ubuntu server 18.04. Below worked for me:

1. Creating an empty file(/etc/NetworkManager/conf.d/10-globally-managed-devices.conf)

2. removing the file(10-globally-managed-devices.conf) from /usr/lib

and finally

3. changing Network renderer to NetworkManager in Yaml file.

Yaml file location: /etc/netplan

My yaml was like this:

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

Changed to:

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

and I change it to: