Lockscreen dual monitor setup

question

I have two monitors. The hdmi ones I manly use and the DP one I usualy keep off because I use it via usbc with the work laptop. When I start the computer the login prompt is on the DP one and only after the login it gets disabled and I can use the HDMI one.
lockscreen is fine.

I tried this but it won't help
root@bazzite:~# cp ~adrian/.config/monitors.xml ~gdm/.config/

Thanks