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Adam_G92 Author

Level 1

9 points

MacBook Pro can’t set the native external screen resolution

I bought a new ultrawide monitor 144hz 21:9 3440x1440 native resolution. I was planing on connecting it to my MacBook Pro 15 inch 2016 with Radeon pro 450 with Mojave 10.14.6, the screen is connected with hdmi to usb-c dongle

The problem is that the MacBook doesn’t recognise the screens resolution and the highest one I can select is 2560x1440 which looks terrible. Not to mention that it’s only seeing it as 60hz screen (can’t change that). Is this a bug ? How can I set it to 3440x1440 with 144hz? https://imgur.com/gallery/20PDsiL

Posted on Dec 4, 2020 12:14 PM

Top-ranking reply

Grant Bennet-Alder

Level 10

134,053 points

Posted on Dec 4, 2020 5:54 PM

That is my personal recommendation. They supposedly gave you a cable, now all you would need is an adapter.

There are two models of USB-C Digital AV MultiPort Adapter. Take a look at this article:

About the Apple USB-C Digital AV Multiport Adapter - Apple Support

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MacBook Pro can’t set the native external screen resolution

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