Ubuntu 18.04 LTS and Nvidia P100

Hello Support-Team,

I have installed the Ubuntu 18.04 LTS and the NVIDIA-390 Driver for the NVIDIA P100.

Unfortunately, I can not start the command nvidia-smi, what can mean that the drivers are not properly installed with the Ubuntu kernel linux version 4.15.0-23-generic.
I have again installed the Nvidia 390 again and shows me that the latest version is installed that means the NVIDIA 390 are installed.

do you have an idea what can be the reason, that the drivers do not work with the current kernel?

Best ragrards