in one of those lucky times my Marsboard A20 booted with less hickups than usual the Arch Linux sun7i version for Cubieboard2 booted almost properly ... I could not say anything else because the MarsBoard hanged but I am as disappointed as a camposxp with this MarsBoard A20, not because I was execting Linux, simply because they are selling boards that just do not seem to work at all, not even with Android.
It's still unknown to me what kind of power supply is needed here to boot a MarsBoard A20 properly while Cubieboard2 never gave me a glitch with 5V 1A, 5V 2A, and 5V 2.1A adapters ... none of them caused problems to the video.
They should give us money back or A10 versions as replacement paying the delivery or all people will say about this board is that nobody should buy one.
Too bad since it's the "cutest" one I could find out there based on Allwinner A20 (... even if I know this is not a good parameter to evaluate a board ... but it is one if you would like to develop entire systems on it and re-sell them ...)
Best Regards, looking forward here too for any word from a marsboard responsible.