08-02-2021, 06:00 PM
How have you confirmed that you have no physical HDMI issues. I assume you have quality HDMI cables and no shorting at the HDMI headers on the board. I bought 5 Rock64 v2 boards and have confirmed that 2 of them have faulty ethernet sockets and 1 has a faulty USB2 socket possibly down to poor soldering. If you have any warranty left on the board I'd return it now.