U4021QW, flickering, MacBook Air M1

Question

I've tried looking for a solution for this problem. I updated to macOS Monterey beta RC today. It was working fine for the whole day and then went to dinner and it started strobing non-stop. I unplugged everything, replugged everything restarted my MacBook Air M1, several times, restored to factory settings on my U4021QW and it's still strobing. I don't want to use the word flickering because that seems to look different from what I'm experiencing. It's hurting my eyes badly and I need my U4021QW to work for tomorrow. Has anybody else experienced this problem? I also connected my iPad Pro 2020 which is non-m1 to see if this was an M1 problem or just my MacBook Air M1 and it's all the same.

bskoda · Answer

I'm in the same boat. My U4021QW started strobing this evening and it's giving me a headache. I took the dock out of the equation with my laptop connected directly to U4021QW via Thunderbolt and same strobing effect.

-M1 MacBook Pro 14"

-MacOS Monterey 12.1

-Caldigit TS3 Plus dock (v44.1 current firmware)

maxse · Answer

Were you ever able to fix this? I have the exact same configuration and having issues out of the box.

This is my only display. Will be going back to my U38 for now.

-M1 MacBook Pro 14"

-MacOS Monterey 12.1

-Caldigit TS3 Plus dock (v44.1 current firmware)

DELL-Chris M · Answer

All should remove the Caldigit TS3 Plus dock from the troubleshooting. Try to test the U4021QW directly to the MacBook Pro.

MacBook Pro --> U4021QW TB4/USB Type-C cable --> U4021QW #7 TB3/USB Type-C port

Monitors

U4021QW, flickering, MacBook Air M1

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