Okay, NanoPC-T4 can run now dual displays, and GPU 3D acceleration works flawlessly:
https://users.armbian.com/jmcc/misc/nanopct4-dual-screen.mp4
@TheGuv It seems like a problem specific to Helios64. @aprayoga Maybe you can shed some light on the problem? This is the post where the user reported failing GPU acceleration: https://forum.armbian.com/topic/16516-rk3399-legacy-multimedia-framework/?do=findComment&comment=116900
[EDIT]: And this is the fix that enabled NanoPC-T4 DP, in case it is helpful to debug the Helios64 problem: https://github.com/armbian/build/pull/2647
LOL. If you promise not to test it on that fine laptop your mother has, I'll send you one. PM me your Amazon wish-list with it on, or just send your address (whatever is better for you).
