I want to be able to login as root, just once and quick, the way I found for Linux Mint Rebecca (17.1) worked once as a kind of "enter your login" which Ubuntu and Mint had in the past, not sure about Ubuntu now, I quit when 12.04 was making my hair stand up in anger at times, and when I "upgraded" to 12.10, it couldn't handle gnome-classic, it would boot but it was impossible to click on anything then I switched to Mint 13 and 15 quickly thereafter and followed up 16, 17.3 (not going into 18 territory yet, as it is not compatible with some hardware on my main desktop.
Anyway, my VPN service, which I mainly add openvpn servers to the network-manager to, is in the greats, the kind you settle on after looking at that gigantic table of VPN services and their features (or bugs) or outright failures. Mine's pretty solid for various reasons, and I was rather curious when it was the first vpn service that had instructions on how to use L2TP/IPSEC protocol. So just to test, I followed the guide and added just 3 servers and tried it and yep, it worked. I got L2TP IPSec VPN Applet and L2TP IPSec VPN manager. That's all nice and dandy, it's already much more of a pain than in windows where they have a gui, they don't for linux, gotta add the files and the key files etc. logins and passes all manually and then 3 months later you need to delete a bunch you installed because they are no longer operational and you need to download the config files and the key-files again. Anyway, I found that in case I can't use OpenVPN for some reason, L2TP IPSec meanwhile could be an option better than pptp (for god's sake, they should stop, microsoft even replaced it with sstp which just a little vpn providers offer, likely for very good reasons).
The problem is when I say reboot or shut down the PC cleanly, through System->Shut Down or Restart, I'll see Mint's Logo and then it will disappear and I will see some text, modemmanager shutting down, and something about Amsterdam-3, Stockholm-8, Austria-9 (not actual names, but the 3 servers) being somehow shown,I'm not sure it's saying disconnecting (if it would, I would have panicked a long time ago, but that's stuff happening in the back, or in the other user I created just to be able to "debug" caja when suddenly (rarely happens, but it does, it will go into Zombie mode and there's no folder browsing possible, so I made that other user to log in and do a short command to bring back caja to life and logout. Is there a logfile of your last shutdown and/or restart? I could show you, I want to know what's going on, and since it's not something that should show up as it's not a PID, if I don't turn on the manager, the icon doesn't show up in the notification area. So that's why I want to go into root and somehow delete L2TP related packages while there. But first, being able to remember what happens at shutdown, something I see rarely would be useful for me and others to have a guess at what is going on.