I have an Ethernet router that is not working on Ubuntu 18.04. The Ethernet connection did not work on the installation media, so I figure it can’t be the Ubuntu installation. Different ports don’t work; I’ve done
sudo ip link set enp4s0 down and
up but it doesn’t work. Everything I do gives me network connection failed message. I even tried unplugging the router and plugging it in again. I have looked on various websites and could not find anything specific to my situation. The router is Netgear if that might be relevant.
Is there something to fix this? Some magic command?