Disable second display for locking screen

I’m not talking about the login windows but the lock screen when you press meta+l, I know how to do it for login already. Is it even possible to make the system handle the locking screen this way?

You probably need to share which lock screen you are referring to.

Well I’m running with kde if that helps, the locking screen thats toggled by meta+L

Yes, that helps, you are probably using the plasma lock screen.