Xavier modules initialization

We tried to initialize AGX Xavier P2888 modules using сarrier board from Jetson AGX Xavier development kit without success. The led on board became white, but we did not receive video output. Could you please elaborate on how can we use modules with this сarrier board or could you suggest some other ways to initialize them?

For a development kit you could just flash it with the default software. For other carrier boards you would need to also add the manufacturer’s software. The usual way to do this is with an Ubuntu 18.04 host PC running JetPack/SDK Manager. See:
https://developer.nvidia.com/embedded/jetpack-archive
(most recent is JetPack 4.4)

Note that you probably need to go to that URL, log in, and then go to the URL a second time.