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MacBook Air M1 wifi speed problem when the lid is closed (Working with external monitor connected)

Hi, I've a new MacBook Air M1 and when I close the lid working with an external monitor, the wifi speed decrease a lot!


The fastest is with the lid open (connected to monitor also)

Decrease from 51MB to 6MB.


MacBook Air 13″, macOS 12.0

Posted on Nov 5, 2021 7:12 AM

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Posted on Nov 6, 2021 5:32 PM

The antenna is in the Display Assembly. So when the Display is open the antennas have a larger surface area and angle to send/receive signals. When the Display is closed, then the surface area and directional ability is reduced.



4 replies

Nov 6, 2021 6:51 PM in response to molinajp

I'm not aware of any way to do that, but I'm not an expert when it comes to some of the more advanced features/options.


A quick search revealed these two options, but I don't know if they will work on newer versions of macOS or Apple hardware, but I have never used either method:


Changing the NVRAM settings (unfortunately requires temporarily disabling SIP and using the command line).

https://apple.stackexchange.com/a/301847


Using a third party app (there may be other apps, this is just an example).

https://apple.stackexchange.com/a/389201




MacBook Air M1 wifi speed problem when the lid is closed (Working with external monitor connected)

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