Mission accomplished : (ubuntu 18.04 + qemu-kvm and qemu-system updated to ubuntu 20.04 + kernel kvm enabled and everything is compatible with the nvidia stuff. windows 10 arm64 runs fast enough.
Mission accomplished : (ubuntu 18.04 + qemu-kvm and qemu-system updated to ubuntu 20.04 + kernel kvm enabled and everything is compatible with the nvidia stuff. windows 10 arm64 runs fast enough.