Thank you for fast reply. Overall, Armbian is excellent and my comment is somewhat misinformed. The more I use armbian-config the more I like it. I used armbian-config to install minimal desktop on Armbian_5.65_Orangepi-r1_Ubuntu_bionic_next_4.14.78 and Debian too. The lightdm service would not start so I installed gdm3 using apt. After installing minimal desktop using armbian-config the RDP option shows up in armbian-config and it works for Ubuntu but not Debian.