I would say that the HDMI out should work with your 4K displays no problems, at least from my experience... I have two Pine 2GB and they work with any TV that can do 1080p in my house, and even with a normal DVI adapter on my old EIZO TFT when set to 720p... can you try the new Debian release image from lenny's site:
https://www.pine64.pro/download.php?opti...ptionid=41
just unzip that archive with 7zip or something, use win32diskimager or dd to write it to a card, you should see HDMI output and get a ssh login right away...
https://www.pine64.pro/download.php?opti...ptionid=41
just unzip that archive with 7zip or something, use win32diskimager or dd to write it to a card, you should see HDMI output and get a ssh login right away...
Come have a chat in the Pine IRC channel >>