No Laptop Screen When Unplug HDMI.

[wrender]

Should there be a sddm.conf file (do I need to create one) or should I edit the /etc/SDDM/Xsession file?

Any tips on how to do so?

[sithlord48]

you can create one if its not there. Try making it with this

[X11]
ServerArguments=-dpi 96

[wrender]

you can create one if its not there. Try making it with this

[X11]
ServerArguments=-dpi 96

I created the /etc/sddm.conf file and added what you wrote and it worked perfectly!

Thank you and everyone for all the help. I appreciate it immensely!