This devices continues to not impress. With some displays it does not make it into the desktop (especially 4k ones). But what they all have in common that I have to connect the GND UART pin to a Serial Interface for them to even boot up at all. It does not even need to be connected to Laptop, I plugged it right into the same Anker 87W Battery (Serial, Radxa and USB powered Monitor). I can also plug the Serial Interface into a Laptop with it’s own Battery for it to boot. There also seems to be a low voltage potential of (~0.7V) on the 5V line when HDMI with a powered is connected but the Radxa is not powered up.
I am wondering if all those issues (including the Wifi) is caused by a Hardware design issue with the power and grounding.