Kubuntu 16.04 | How to turn off auto-login after start - GUI not working

Question

After having Kubuntu installed with the option for Auto-Login turned on, I now would like it to be off. I do not want to have a auto-login at start up (what makes every other login senseless).

I have set it here as "off" but that doesn't change anything. The button does not seem to be working.

How can I switch it off?

Answer 1

• Find out what DisplayManager you are using DM-List (KUbuntu 16.04 is using SDDM)
• Then you can open the right configuration file (/etc/sddm.conf)
• There you can delete the entry as superuser ([Autologin] User=john Session=plasma.desktop)
• Auto-Login is off

All information are taken out of

https://wiki.archlinux.org/index.php/SDDM

I got the right hint at a kubuntu chat from a friendly user.

Answer 2

I tried all variants from the Network! My info is actual for Kubuntu 20.04! and found the next:

1) check logs here if any issues journalctl -r -p3

2 create a config file (new), there is no by default

sudo nano /etc/sddm.conf

type this!

[DAEMON]
Relogin=false
User=nik
Session=plasma.desktop
[Autologin]
Relogin=false
User=nik
Session=plasma.desktop

Session name is case sensitive! I tried to use Plasma.desktop and it did not work

I tried to find where to take all session names but I did not find that, so hopefully this will help anyone to save time