I have some problems connecting to Wifi networks using network manager using Kubuntu 18 with KDE/Plasma. There were no problems a fews day ago, but now it gets stuck on "Waiting for authorization" (Wifi) or "Needs authorization" when trying to connect to a VPN.
Tested with several different Wifis. I managed to create a working connection using nmcli command (but only with WPA personal encryption. Doesn't work with WPA enterprise encryption methods) (see Kubuntu 16.10 - wifi stuck on 'waiting for authorization').
Any ideas?