Apple Screen Sharing issues w/rMBP that has no internal display w/external monitor

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this seems odd scenario here working with.

2014 15 rmbp. primary screen removed.

apple screen sharing works fine when headless. generates virtual display.

problem. if hook external display screen sharing freaks out.

trying ti determine how may displays there , attached.

result screen sharing freezes , screen sharing session can not re connected until computer rebooted headless again.

trying around this.

need attach external display computer , access through screen sharing/ard.

attempted use reverse clamshell mode command:
sudo nvram boot-args="iog=0x0"

command allows use external without activating internal when opened. not work because internal not present.

need best ideas!!!

scott
 



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