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{A1989 / EMC3214}—Released in July 2018, the 13" MacBook Pro features quad-core i5 and i7 processors and Intel Iris Plus integrated graphics.

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Why I cant connect to external display?

Hello,

I have this problem at my work with my MacBook Pro 2018.

While connecting to projector with 15m HDMI cable via USB-C hub I get no input on projector, but my Mac finds the projector and I can even change resolution of projector.

Then when I took a shorter cable my Mac suddenly started to mirror display. All windows laptops works perfectly with that projector and most Mac’s do as well.

Tried different USB-Chubs no help, and I had same problem with two different Projectors and two different MacBook Pro’s both the newer 2018 model.

Answered! View the answer I have this problem too

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After booting completely and with the external plugged in hit Command and F1 keys at the same time.

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Will try it next time I come across Mac

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I don't have the latest mac, but sometimes they don’t get connected automatically to an external display. If that happen, you should check the section of displays in settings, and select it.

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Artur Aleksandrov will be eternally grateful.
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