The issue regarding HDMI output on UEFI has been resolved for NUC11 and older. Discussion regarding troubleshooting HDMI output on NUC12 has been migrated to the below thread:
The issue regarding HDMI output on UEFI has been resolved for NUC11 and older. Discussion regarding troubleshooting HDMI output on NUC12 has been migrated to the below thread: