Launch Dolphin if you have it installed and press F4.

Edit grub at boot time if you are using it, wrote emergency at the end of the line.

If you have installed X, then check to see if you can select another session in sddm to launch X own window.

There are other ways to do it as well, f.eks. with kdesu and alt + f2

I use windowmaker and plasma. I also dabble in icewm