I can't connect to an external display using a USB-C to HDMI adapter

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MacBook Pro 13インチ Function Key搭載 2017

モデル番号はA1708/EMC 3164。2017年6月発売。このエントリーレベルのMacBook Proには伝統的なFunction Keyが搭載されています（OLED Touch Barの反対)。

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r.escallon @rescallon

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投稿日: 2018年8月22日

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I can't connect to an external display using a USB-C to HDMI adapter

I am unable to use an external display using either a MOSHI USB-C to HDMI (4K 60) or Insignia adapter.

So far I have tried:

Resetting NVRAM
Resetting SMC
Reinstalling system software MacOS High Sierra
Different adapters (MOSHI and Insignia)
Different HDMI cables that work with my older MacBook Pro and external display
Different displays

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What is the USB-C cable you are using? Some are not for data only power! As an example the cable you get with your system is a power cable for the power adapter.

Dan さんによる2018年8月22日

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What is the USB-C cable you are using? Some are not for data only power! As an example the cable you get with your system is a power cable for the power adapter. — Dan

Seff Ka @seffka 評価: 1 1 · Answer 1 · 2020-08-03T15:18:31-07:00

Seff Ka @seffka

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投稿日: 2020年8月3日

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Some hub/adapters are just finicky and refuse to work no matter what.

Some hub/adapters will work after Macbook will first go to sleep with the hub/adapter plugged in, enabling the video output on waking up. If you disconnect such a hub/adapter from the Mac you will most probably need to repeat aforementioned procedure again.

And some hub/adapters will just work no matter what, including the one made by Apple itself.

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MacBook Pro 13インチ Function Key搭載 2017

I can't connect to an external display using a USB-C to HDMI adapter

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