Gfilui

I know this question has been asked several times from Ubuntu 17.04 Server and previous. The Ubuntu Desktop, once installed, will not detect and manage the Ethernet Adapter.

I have stepped thru the previously reported fix here which has not fixed this issue for a new 17.10 Server running Ubuntu Desktop (both Gnome and Budgie)
Ethernet device not managed

Points to note.

1. This Ubuntu 17.10 Server is a VirtualBox VM running on a Windoze 7 Host.


2. the VM has the NIC setting on NAT. (I don't want to expose this VM on the main router DHCP scope as it's on a work machine/network)


3. 
   

   the Ubuntu 17.10 server does have functioning network but just CANNOT be managed with the Ubuntu desktop Network Manager

   
   
   

   

   
   

I'd basically like to tweak what's needed on the Ubuntu 17.10 Server so the Network Manager will detect the network connection.

config files in the Ubuntu 17.10 Server

/etc/network/interfaces:

# /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)
# Generated by debian-installer.

# The loopback interface
auto lo
iface lo inet loopback

/etc/NetworkManager/NetworkManager.conf:

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true

[device]
wifi.scan-rand-mac-address=no

/etc/netplan/01-netcfg.yaml:

# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
 version: 2
 renderer: networkd
 ethernets:
 enp0s3:
 dhcp4: yes

Whats nice is I'm able to snapshot the VM, play, and quickly revert if something is totally munched.

I'm thinking enp0s3 needs to be listed in the /etc/NetworkManager/NetworkManager.conf file?

If you want Network Manager to handle networking, I suggest that you change the netplan file:

sudo mv /etc/netplan/01-netcfg.yaml /etc/netplan/01-network-manager-all.yaml

Then change the file:

sudo nano /etc/netplan/01-network-manager-all.yaml

Change the file to read:

# Let NetworkManager manage all devices on this system
network:
 version: 2
 renderer: NetworkManager

Save and close the text editor. Next:

sudo netplan apply
sudo service network-manager restart

Any improvement? It may take a reboot.