Pc freezes when i try switch to BSPWM or i3 in the lock screen

Hi, i installed bspwm-manjaro and i3 from add/remove software. But when i try to switch to either of them from the login screen, my pc freezes. please help me out.
Thank you.

HI and welcome to the forum :wave:

I’ll leave a link with some material to read about using mutiple DE/WM’s on the same machine and how to approach it and what risks you take with your setup.