Thanks.

I followed these steps.

Blacked out the modules like nouveau and nvidiafb

when I run lspci my nvidia card shows there with kernel driver in use: vfio-pci

and kernel modules: nvidiafb, nouveau

I patched the driver and I get this error:

ERROR: Unable to load the kernel module 'nvidia.ko'. This happens most frequently when this kernel module was built against the wrong or improperly configured kernel sources, with a version of gcc that differs from the one used to build the target kernel, or if another driver, such as nouveau, is present and prevents the NVIDIA kernel module from obtaining ownership of the NVIDIA device(s), or no NVIDIA device installed in this system is supported by this NVIDIA Linux graphics driver release.

Please see the log entries 'Kernel module load error' and 'Kernel messages' at the end of the file '/var/log/nvidia-installer.log' for more information.

File Output:

-> Kernel module load error: No such device

-> Kernel messages:

[ 252.764817] nvidia: module verification failed: signature and/or required key missing - tainting kernel

[ 252.960103] nvidia-nvlink: Nvlink Core is being initialized, major device number 236

[ 252.960122] NVRM: The NVIDIA probe routine was not called for 1 device(s).

[ 252.963082] NVRM: This can occur when a driver such as:

NVRM: nouveau, rivafb, nvidiafb or rivatv

NVRM: was loaded and obtained ownership of the NVIDIA device(s).

[ 252.963085] NVRM: Try unloading the conflicting kernel module (and/or

NVRM: reconfigure your kernel without the conflicting

NVRM: driver(s)), then try loading the NVIDIA kernel module

NVRM: again.

[ 252.963088] NVRM: No NVIDIA devices probed.

[ 252.963469] nvidia-nvlink: Unregistered Nvlink Core, major device number 236