My computer is a bit old and has 4GB RAM. I wanted to switch to lubuntu since I heard it's better with memory. During the installation I had second thoughts and crtl-Z'd the terminal and ended the lubuntu installation. But it was loading for a couple minutes in the meantime. I went to start my computer the next day and lubuntu start screen showed up but then switched to 18.04 after logging in.
I ran the command listed here under lubuntu:
and then did
sudo apt-get update sudo apt-get upgrade
to make sure all the files for 18.04 were still intact. One of the files I notice being deleted by the psychocat command was ubuntu-desktop. After seeing ubuntu was not getting passed the loading page, I ran the install for ubuntu-desktop from the command line and ran upgrade and update once more but it's still getting not getting passed the ubunutu load page. I should also add that the load page is the 18.04 load page and when logging in by the terminal it also states Ubuntu 18.04.2 LTS on the top left.
There are of course many posts like mine about this problem. All of the solutions I have tried and all of the responses to the problem have to deal with lightdm or a nvidia drive. Since ubuntu before the lubuntu was running fine, there isn't anything wrong with my video card and on top of that I already tried all of the commands with lightdm.
Any help is appreciated.