FYI, the TX2 forum would be the best place for JetPack questions:
Keep in mind that the video driver and CUDA are two separate packages…but CUDA depends on the X driver ABI under Linux. The default TX2 install does install the video driver on the Jetson via the micro-B USB connector. After a flash the Jetson reboots and at that point wired ethernet allows install of CUDA on the Jetson itself. My host is Fedora so I’m not sure about what JetPack might do to install video drivers on hosts…I always install manually.
CUDA itself can never be installed until the video driver is in place…for the Jetson this is always in place unless an “apt-get update” overwrote something on the host (check with “sha1sum -c /etc/nv_tegra_release”)…for the host this is always a separate step.
When you say “part of the cuda drivers” are you talking about drivers going to host? Or to Jetson?