System hangs after connected to external monitor

[garywzh]

I got a 4k display monitor which works great on windows 10, when I switch to macos, the monitor says "no signal" but macos detected the monitor. After one or two minutes the system hangs and I have to hard reboot the laptop.

[stevezhengshiqi]

Hi, because I am not able to access HDMI these days, I cannot solve HDMI related problems. You can try the latest config.plist in my repository to test whether it works.