Ubuntu 18.04, using a USB Ethernet adapter: after updates, Network Manager says, "No suitable device found for this connection."

Question

I'm on Ubuntu 18.04 and I installed updates a couple days ago. Since then, I can manually start my wired (USB-ethernet adapter) connection using iproute2 commands to bring up the link and give the interface a static IP address, but when I try to use Network Manager it says, "No suitable device found for this connection."

Answer 1

Researching this again today, I came across this: Ethernet device not managed

Which led me to editing /usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf and changing this:

unmanaged-devices=*,except:type:wifi,except:type:wwan

to this:

unmanaged-devices=*,except:type:wifi,except:type:wwan,except:type:ethernet

and then doing this:

sudo service network-manager restart

and suddenly my USB ethernet connection came right up.