Just saying you should post the html link ( http://www.aanning.com/2/KU.htm ) in KDE Forums, as there are much more people to get exposed this to and may help:
https://forum.kde.org/viewforum.php?f=225&sid=b0e09778faf7b83dbf180c9f497bc174
This is what worked for me (Plasma KDE 5 desktop)
Edit or create the file /etc/sddm.conf and add this:
[Autologin]
User=$USERNAME
Session=plasma.desktop
Substitute your user name for $USERNAME
So you got it all done now and reached your end goal?
Hi,
Well, this "was"working fine. I’ve been doing regular
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
While keeping an eye on sddm.conf file…its still there contents unchanged, however, no more auto login!
any suggestions?
Thanks AJ
Or as an alternative for my end goal, is there a way in kubuntu, like in windows, to add an .exe file to a startup config, or folder, so the app will start up and run, for all users, before the login screen?