VNC is likely the answer.
Using xrdp and Remmina here, Fedora to CentoOS 7. Works well, though I generally use the terminal for everything.
Main use was configuring files with Nano using Powershell SSH, which didn't work to well, so I RDP'd in to use a native terminal
Technically it (RDP) is a Microsoft developed proprietary protocol, but you are correct that RDP in Linux works just fine. I think since it is Microsoft protocol, people just assume Windows only....no?
OK, it's easy enough to remote into a windows from Linux Mint using Remmina but remoting into another Linux Mint box is what I'm trying to figure out. Is it even possible?
do you really need a persistent desktop? ssh can tunnel X
Install xrdp --> make sure ports are open --> profit?
As I said above, RDP from Fedora to CentOS works.
Thanks. I'm waiting on memory and an SSD to finalize the box. I'll give this a whirl when they arrive. I'm wanting desperately to get completely away from MS and mastering this would be a major milestone.