안녕하세요!
다른 케이블 (C to HDMI 2.1 , C to DP 등) 사용해보시고, 다른 케이블도 안될 경우 아래 방법으로 시도해보시기 바랍니다.
MacBook Pro M4 is not connecting to exter… - Apple Community
External display not detected after macOS… - Apple Community
What finally fixed it for me was resetting WindowServer and related display configurations: (#뒤에있는건 설명이므로 복붙 하실 필요 없습니다. )
- Open Terminal.
- Run these commands one by one (you will need your admin password for the sudo ones):
# Remove global WindowServer preferences
sudo rm -f /Library/Preferences/com.apple.windowserver*.plist
# Remove WindowServer cache/database
sudo rm -rf /private/var/db/WindowServer
# Remove user-specific display profiles
rm -f ~/Library/Preferences/ByHost/com.apple.windowserver.displays*.plist 2>/dev/null
# Remove ColorSync profiles linked to displays
sudo rm -rf ~/Library/ColorSync/Profiles/ByHost
sudo rm -rf /Library/ColorSync/Profiles/Displays 2>/dev/null
# Restart display services (this will log you out)
sudo killall -HUP WindowServer
감사합니다.
도움이 되셨다면 하단의 ⬆️ 버튼 한번씩 눌러주시면 감사하겠습니다.