You need to connect through primary gpu, not integrated one. Reinstall from scratch with integrated graphics disabled (check BIOS settings).
I tried it differently. The first start-up with integrated graphics and the first start WITHOUT the built-in graphics. Anyway, a cyclic reboot.
It turned out to configure with a connected monitor. But it is necessary without a monitor.
Everything worked perfectly on NVOS 19.2, what is wrong with this system?
I launched it. But overclocking does not work. What do you advise?
The problem was in the line
HEADLESS_MODE="YES" # YES or NO # If using P106_100, P104-100 GPU's in a full headless (no monitor) rig, set this to YES