Fix macOS 27 Golden Gate multiple external monitor displays issues hang or stuck

fix_macos_external_displays.md

Current Setup:

• 2 Monitor 4k 27 inch
• Macbook Pro 14 M1 Pro

Problem: when 2 monitor pluged in, 1 of the monitor hand or can't be used

Solutions:

• Remove windowserver displays by using terminal command

  sudo rm /Library/Preferences/com.apple.windowserver.displays.plist

• Remove the ColorSync displays profiles, find in directory /Library/ColorSync/Profiles/Displays then remove your .icc monitor profiles

  cd /Library/ColorSync/Profiles/Displays

for my case is Mi Monitor: Mi Monitor-*.icc, remove both of your monitor profiles in here using terminal command

sudo rm Mi\ Monitor-*

(do not forget the backslash \) if your monitor name contains spaces

after removing, then restart your mac