I am new to this forum and to Armbian. I have a Pcduino 3B and Pcduino V2. The 3B works great with the v5.20 Armbian build. The update to v5.23 worked as well. Video is working very well and is definitely not as dark as on v5.20. Now the V2 is giving me fits. It will not boot at all using the Armbian build. If a wait long enough, it will just boot with the Ubuntu build that is in the onboard memory, usually about 10 minutes. I tried the original Ubuntu 12 and Android builds from LinkSprite and all work correctly. Yes, I followed exactly as the directions provided on your site for downloading and build the SD card. I even tried three different CD cards. All work with other builds but not the Armbian. I use the USB Image formatter and writer utilities on my Linux Mint machine to do all the SD card builds. This is the first time it hasn't worked. I love Armbian and prefer over the LinkSprite. I have resurrected my media player for my camper, and plan to pursue my automated train control system with the other. May buy another Pcduino card if can't get the V2 to run Armbian. Thank you.
