How to install.deb

how to install (file). deb on VIMs_Ubuntu-xenial_Linux-3.14_mate_arm64_SD-USB_2018-05-31

What debs? Kernel? Board packages?

You can use Fenix to build such debs.

$ source env/
$ make debs

VNC-Server-6.3.2-Linux-x86.deb howto install

The deb architecture is for X86 , you can’t install it on VIM2 which have ARM64 architecture. Please refer to this blog about how to install VNC.