I have an Ubuntu 20.04 Desktop installation on an Intel Nuc (bare metal) in my closet. I originally installed Desktop version and have all this year been using it at command line (ssh in from my Mac Book Pro) I do use the password option for ssh. it is a webserver and is still serving the web.

Today I took the Intel Nuc out of my server closet, connected a monitor, mouse and keyboard and saw the GUI for the first time in ages.

It showed me the Purple Screen with the Cat in background I saw my name I tried to login using the same password I have been ssh in for all this year... and now. ssh still works but it wont recognize my password when i type in from GUI. I am thoroughly confused and honestly I do not know what to do. What are my next steps to accessing the Desktop?

FYI: I can see that the keyboard is working.

FYI: I saw something new as I booted onto the the system. A 'Kubuntu' startup passed by before the GUI showed up.

Kind Regards,
Mark