On Wed, 17 May 2017 14:58:23 -0300 Lucélio Gomes de Freitas aa.lucelio@gmail.com wrote:
How to restart the network and NetworkManager services?
Pick one, both can't run. The default service on Fedora is now NetworkManager. Restart it like this (as root): systemctl restart NetworkManager To disable network service: systemctl stop network systemctl mask network
If your system isn't finding the ethernet card on boot, that could also cause the problem. Check in journalctl -b by searching for eth. Are there errors there?
The suggestion to make sure it is turned on in the BIOS is a good one. It should show up in the output of lspci.
Is it possible that this is new ethernet hardware that your old F20 kernel doesn't have a driver for? Do you have an old ethernet card laying around that you could plug into a slot, and get networking back?