Questions about the M2 chip expansion screen

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Questions about the M2 chip expansion screen

I have a MacBook Air (M2) and two monitors (Lenovo). When I try to use two monitors to extend my computer screen, I find that the computer screen shows A, but both expansion monitor show B, and there is no way to fix this problem. After reviewing the official documentation, I found that this is a limitation of the M2 chip.

Now I try to close the lid so that one of the screens is A and the other is B. But the result is still the same on both screens. I only need to use two external displays to get it to work correctly. Please tell me why this doesn't work and how I can fix it.

MacBook Air, macOS 12.5

Posted on Dec 10, 2022 7:55 PM

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Answer 1

Dec 11, 2022 5:38 AM in response to WarriorLi0304

Apple-Silicon 2020 M1 13-in MacBook Pro and Air and 2022 Apple-Silicon M2 13-in MacBook Pro and Air are extremely-capable entry-level computers. They can support the internal display AND an External display up to the previously unheard of size of the Apple 6K display at billions of colors. But only ONE in addition to the internal display.

This may not match the way older computers forced you to work, since older computers were not able to support a really large external display. But it is NOT a defect. The spec was available long before you could purchase the computer.

The Apple standard for its built-in hardware-accelerated displays, makes them suitable for full-motion video for production/display of cinema-quality video with NO dropped frames, and NO dropouts or partial-blank scan lines due to memory under-runs or other issues.

This requires a hardware rasterizer/display-generator for each fully-accelerated display. The first one is dedicated to the built-in display, which can be used at the same time in Extended desktop mode.

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Answer 2

den.thed

Level 10

91,600 points

Dec 11, 2022 8:10 AM in response to WarriorLi0304

As mentioned, the M2 MacBook Air only supports one external display.

see > Use an external display with your MacBook Air - Apple Support

and Display Support at > MacBook Air with M2 chip - Tech Specs - Apple

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