How to get a HDMI video out signal on the LattePanda V1?

https://www.dfrobot.com/blog-1547.html In the LattePanda instruction it says: “This was a headache to set up. I first used a dedicated screen to connect to the wireless network and install the ssh server, and then temporarily use it from SSH. Although it can be used normally after entering the desktop and manually changing the primary/secondary output, it …