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TinyMito

macrumors 6502a
Original poster
Nov 1, 2021
588
756
I wonder if anyone experience the same issue with MacBook Pro 14/16 with M1 Pro/Max chip; if you only plug in HDMI cable to your monitor and a mouse via USB. Close the MacBook Pro lid down into clamshell mode.

The display will never wake up, as if the computer is just sleeping. No matter what I do with my mouse, and I did try with keyboard plugged into it with lid close. No reaction.

If I use the USB-C DP-Alt mode, the display wakes up as it receives the signal in clamshell.

This is by design? Any ideas?
 

TinyMito

macrumors 6502a
Original poster
Nov 1, 2021
588
756
Nevermind, it needs to be plugged in to the power. Otherwise, my MacBook Pro won't wake up.
 
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