Dear all I have contacted NVidia support for help.
In essence they said that they do not support KVM. But when I asked about the deliberate disabling when virtualization is detected, they wanted to help me and I had to grab some more information about the guest system. Full log: https://pastebin.com/UeqrEZgp And the mentioned Windows system information file that I had to collect: Windows system information: https://www.sendspace.com/file/l713tf I will keep you updated with their answer. Best regards, Ramon