https://packages.ubuntu.com/focal/nvidia-driver-495
-> "Bug Reports"
https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-495/+bugs
-> "Overview"
https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-495
-> "View full change log"
https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-495/+changelog
-> find required version: 495.44 for Ubuntu 20.04: "495.44-0ubuntu0.20.04.1"
https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-495/495.44-0ubuntu0.20.04.1
-> Builds: "amd64"
https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-495/495.44-0ubuntu0.20.04.1/+build/22348553
-> "Built files"
download all debs, install those needed (already installed in version 495.46) with `dpkg -i`