I am currently running 2880×1800 resolution on my MacBook Pro retina (using the command setgetscreenres).
Whenever I connect to an external display, my Mac changes to a lower resolution. Is there a way to disable this behavior?
Also I've noticed that sometimes instead of extending the display, it mirrors my display on some external displays. I don't think I will ever use mirror mode, so is there another setting to make all external displays extend?