Ubuntu 20.04 NVidia X Server Settings Problem

Hello, I have successfully installed NVidia driver for NVIDIA Quadro P2200. However, when I run nvidia-settings command, only GPU 0 - (NVIDIA Quadro P2200) tab shows up. There is no information of X Server at all. Can anyone please help me with this situation? The screenshot is attached below.

Really thanks for helping!!

You connected your monitor to the onboard graphics and are now in render offload mode. Which distribution are you using?