RTX 5090 in ubuntu 22.04

I have ubuntu 22.04 and i bought new pc with rtx 5090 32gb. I am not able to connect display port to gpu display port and also when i type nvidia-smi, it is saying nvidia-smi has failed because it couldn’t communicate with the nvidia driver. Make sure that the latest nvidia driver is installed and running. how to resolve this. please help

@tcemadhavan did you find any solution to this in the end?