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project_2501

macrumors 6502a
Original poster
Jul 1, 2017
676
792
With 15.0.1 (and possible 15.0, I can't remember), the external display doesn't work correctly.

I use an external display via a thunderbolt dock with the laptop in clamshell mode: MacBook pro to Caldigit TS4 over TB4, then to display via displayport.

Previously it all worked - power on, shut lid, use external display.

This worked for years - different macOS versions, and with previous MacBook pros too. Sometimes a buggy OS meant I had to tap the keyboard to get the display to wake up to log in.

Now the external display is not activated (no signal). Key presses often don't work and I need to pull out and push in the thunderbolt cable between the dock and macbook pro 14" 2023.

Is this a known bug?
 
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