I've partially fixed the problem.. the clusterboard "works" only with an ATX psu, but anyway i'm still having many problems.
I've tried in order:
Armbian_5.41_Pine64so_Ubuntu_xenial_next_4.14.20
Armbian_5.41_Pine64so_Ubuntu_xenial_next_4.14.33
Build 5.35 from Pine64 Installer
No more than 3 sopine modules works toghether, with 4 no boot at all.
I've tried in order:
Armbian_5.41_Pine64so_Ubuntu_xenial_next_4.14.20
Armbian_5.41_Pine64so_Ubuntu_xenial_next_4.14.33
Build 5.35 from Pine64 Installer
No more than 3 sopine modules works toghether, with 4 no boot at all.