Hi! I've successfully installed Armbian Bionic(kernel 4.20, automated build) image on NanoPC-T4, but gpu drivers not provided.
http://ix.io/1FBI
And /dev/mali0 didn't exist.
The question is: how to build and install open-source drivers(I didn't find any complete instructions), I actually not so experienced on it.
Or if I should build it by myself, where I can find docker with 4.20 Linux kernel?