Thunderbolt 4 KVM - not working with new Apple Display


  • Hi, can you help me?

    Setup:
    2026 Apple display
    Macbook pro m1 MAX 2021
    Desktop windows pc with Asus ThunderboltEX 4 card

    First time I connected, it was working. Then it stopped and doesnt awake the Apple display anymore. Doesnt matter the order in which I connect the cables, just doesnt work.
    And yes, the display is working when I connect it directly to the macbook or to the pc.

    Help please!



  • Yeah, this seems like a common issue with Thunderbolt KVMs and Apple displays. It’s probably more of a macOS/compatibility thing than your setup.

    You could try disabling sleep, power cycling the display after switching, or checking for firmware updates. Still kinda hit-or-miss unfortunately—hope you find a solid fix!

    Snow Rider


  • Does anyone know if this WILL work if you use a thunderbolt 4 port on the Windows PC as well as the Mac? As that is what I would like to do.


  • According to users with the same setup (Apple display + MacBook + Windows PC + Asus ThunderboltEX 4), the issue you describe — “worked once, then never wakes again” — is common. 

    fnaf


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