I have a MacBook Pro with a broken screen. It is functional with the lid closed and an external monitor, keyboard, and mouse. However, if I open the lid (to use the camera) the external monitor goes blank and I cannot do anything because the screen is broken. Is there a way to configure things with the lid closed such that when the lid opens the external monitor is retained?
I got it working. Initially the external monitor did not display at all when the lid the was up. Then the external monitor spontaneously started working in non-mirrored mode with the lid up but when I opened System Preferences it was on the broken screen not on the monitor. Then somehow System Preferences appeared on the monitor and I was able to configure it as mirrored.