MacBook Air M4 and ASUS ProArt Display PA279CV

Recent versions of macOS do not like to see display transmission errors – as in, they may cut resolution or signal if they see any. Monitor vendors sometimes ship "lowest bidder" type cables in the box. Perhaps the USB-C cable included with the monitor is experiencing errors enough that the Mac is cutting the signal.

You might try using a different USB-C to USB-C cable and seeing if that helps. Make sure that it is rated for

• Carrying 4K video
• Carrying 96W or more of USB-C Power Delivery power (that monitor can provide up to 96W)

and try to keep the length to three feet / one meter or less.

I have the same problem (im using a MacBook Air M4). The solution I have found so far is to restart the computer each time I need to connect the laptop to the monitor. Has anyone found another solution?

This is weird but i heard of this issue before with Monitors only working with DP. You might want to give this issue into feedback so that apple can look into it

Please do so using this form Product Feedback - Apple

It seems like there might be a compatibility issue between the USB-C connection on your MacBook Air M4 and the ASUS ProArt Display PA279CV. Using the DisplayPort to USB-C cable is a viable workaround for now.

Haudeda wrote:

It seems like there might be a compatibility issue between the USB-C connection on your MacBook Air M4 and the ASUS ProArt Display PA279CV. Using the DisplayPort to USB-C cable is a viable workaround for now.

You're essentially repeating what the original poster said. They know there is a problem and they know Display Port to USB-C cable works. I'm not sure what the value is here.

"MacBook Air M4 and ASUS ProArt Display PA279CV: Hello, I’m experiencing an issue when connecting my monitor to my MacBook using a USB-C to USB-C cable (the one included with the monitor).[...]"

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See what is provided by Google AI: macbook air to PA279CV

I know that when I got my external monitor a couple of months ago, the instructions were emphatic that I only use the included USB-C to USB-C cable. So Servant of Cats may be onto something.