Monitor/Display not detected over USB-C

Having the same issue as others have posted without resolve.


38UC99-W

38" WQHD+ IPS Curved Ultrawide Monitor


MacBook Pro 16" 2023 M2 Max model.


Display is no longer recognized by System Settings/Displays after updating to Seqouia, Currently on release 15.3.2.


Tried new Thunderbolt licensed cables, no change. Updated all LG firmware and Mac software tools.

Monitor recognizes that there is a USB-C connection but there is no data being sent, only power.


MacBook Pro 16″, macOS 15.3

Posted on Mar 14, 2025 11:49 AM

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Monitor/Display not detected over USB-C

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