Thanks.
CTRL+ALT+F1 to F6 bring up the tty modes.
For me the CTRL + ALT + Esc brings up a huge list of all commands possible (about 3000).
I am trying to reinstall xfce since I am able to login after installing plasma-kde, but xfce is refusing to budge. I even renamed the ~/.config/xfce4 folder, but no use.
EDIT:
Reboot worked. Answer on the moved post “black-screen-after-login-need-to-reset-screen-resolution”
Thanks again for helping out.