Arm64: Failed to start xvfb.service

I use the xvfb service. It works in AMD64 bionic, but not in Arm64:

$ sudo systemctl start xvfb
Failed to start xvfb.service: Unit xvfb.service not found.

https://travis-ci.org/JuliaGL/GLFW.jl/jobs/618420320

3 posts were split to a new topic: Start xvfb.service by default in ARM64