- Dec 12, 2019
- Dell Inspiron 15" 5570 - OpenCore
- UHD 620, 1920x1080
- Mobile Phone
Sorry for the late reply, been busy lately. Unfortunately doing that caused the main display to go blank. Still no output on external even after power cycle. Tested the cable and HDMI adapter and they all work (worked with previous EFI)once you re open the laptop,after the login screen appears, power off and then power on your external monitor. then check in system Report if you see a connection on the HDMI
EDIT: somehow the system knows the HDMI is plugged in but still not showing up in Displays. OS lags when HDMI is plugged in...