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external display

I have an external display that I want to use as my primary display with my MacBook lid closed. I have the display connected to my MacBook with a usb-c to Display Port cable and the it works fine with the lid open.


When I close the lid, the primary desktop switches to the external display for a few seconds and then the display goes to sleep. If I press a key on the keyboard, it will wake with the primary desktop on the external monitor for a few seconds then the display will switch to no signal.


Is there something specific I have to do to use the external display with the MacBook lid closed?

MacBook Pro 15″, macOS 11.0

Posted on Mar 25, 2021 1:19 PM

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Posted on Mar 25, 2021 3:04 PM

Use your Mac notebook computer in closed-display mode with an external display - Apple Support

Pay particular attention to power requirements as well as the remaining instructions.

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external display

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