In our college, we have PEAP authentication system for LAN Authentication. With the new Ubuntu update to 16.04, the PEAP Authentication asks for the password again and again and doesn't connect. It used to work perfectly in Ubuntu 14.04. Any suggestions?
nmcli to add the password.
[connection] id=CONNECTION_NAME [802-1x] password=YOUR_8021X_PASSWORD
Restart your network
systemctl restart NetworkManager
You may need to bring the interface down and up to test the new changes:
nmcli con down CONNECTION_NAME nmcli con up CONNECTION_NAME
All the thanks are for this source.