this post was submitted on 01 Nov 2023
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External display/monitor issue (alien.top)
submitted 2 years ago by Engineer_05@alien.top to c/apple@hardware.watch
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Hi everyone,

I have an M1 MBA and connect an external monitor (34" UWQHD) through a USB C hub (Anker 11-in-1). I've got the main power supply in one TB port and the hub in the other port.

My issue is that whenever I disconnect the power and the hub, and then later reconnect the hub, the monitor keeps disconnecting and reconnecting on its own every 10-15 seconds. I've tried using Clamshell mode as well as keeping the laptop's screen opened and I've tried disconnecting the DP cable from the hub before disconnecting the hub from the laptop. I end up having to disconnect everything, restarting, then reconnecting everything one by one.

I've even got the BetterDisplay app and tried disconnecting the monitor from there but no luck.

Any thoughts on what else I can try? I'm hoping there's is simple solution.

Thanks in advance!

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[–] poopmagic@alien.top 1 points 2 years ago

Does it help to have the power plugged into the PD input on the hub?

If I had to take a wild guess, it could be that the hub isn’t getting enough power from the MacBook for whatever reason.