I installed a headless version of Manjaro on my RockPro64 (mainly so I wouldn't have to install extra Lua scripts to get the fans to work. But lets be honest, I'm spoiled on the AUR, paru, and Arch-based systems in general.) and have been using it to mine Monero for a while now. Every time that I run my updates and do reboots now, I always make sure to SSH back into it and run my little bash script so that I don't have to copypasta the pool address a billion times, then just let it mine away. I really don't make anything by doing this, but I do enjoy it.