[hlloyge]

...I will try with previous server, 20.04, to see if there is the same problem. I accidentally rebooted system during configuration, maybe that was the culprit.

...and here we go:

kodi@borg-kodi:/etc/X11/xorg.conf.d$ sudo apt install kodi kodi-x11
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 kodi-x11 : Depends: kodi-bin (= 2:18.6+dfsg1-2ubuntu1) but 6:19.3+git20211024.1813-49a04cd6a7-0~focal is to be installed
E: Unable to correct problems, you have held broken packages.

I wonder what happened. I added repository, and I tried to install kodi packages. Is kodi-x11 something that is not needed anymore, as it is not in official kodi repo?
Also, no autologin, and when I enter password, I don't get KODI, but something called Activities. Same thing as from 21.04.
Is there updated how-to for newer Ubuntu servers?