My laptop has a 4k display. When I plug in my thunderbolt 3 to display port adapter which connects to 3 1920x1200 displays over MST it fails to properly connect because it exceeds the maximum resolution permitted by my GPU.
A -hopeful- solution to this is disabling the built in display and then connecting to the external displays. However, I can't seem to pull it off properly through the display manager and it usually ends in me crashing things.
Laptop -> Thunderbolt 3 to display port adapter -> 3 1920x1200 displays over MST/Daisy Chaining
I am seeking to disable the built-in display when external displays are detected and reenable it when external displays are unplugged.