Most probably your interface appears in /etc/network/interfaces. By default, NetworkManager does not manage interfaces that appear in /etc/network/interfaces. You can change this behaviour. To do this - in a terminal:
change the line managed=false to managed=true Save, stop and start network manager:
Alternatively, you can remove the interface from /etc/network/interfaces. backup the current interfaces file:
Then open the file:
Delete everything in that file and copy and paste the following:
Save, stop and start network manager:
Double check in network manager (click on the indicator) that you have Enabled Networking ticked and you should also force deletion of old "wired connections" and selecting the new wired connection shown in the network manager indicator. (fossfreedom) |