Ubuntu - GPU - VA-API - Override the driver for VA-API

The driver for VA-API can be overridden by using the LIBVA_DRIVER_NAME environment variable.

AMD:
- For AMDGPU driver use radeonsi.
Intel graphics:
- For libva-intel-driver use i965.
- For intel-media-driver use iHD.
NVIDIA:
- For Nouveau use nouveau.
- For NVIDIA VDPAU use vdpau.
- For NVIDIA NVDEC use nvidia.

Example

unset LIBVA_DRIVER_NAME
export LIBVA_DRIVER_NAME=radeonsi

This next step is optional, and only needed if the vainfo command still does not work.

unset LIBVA_DRIVERS_PATH
export LIBVA_DRIVERS_PATH=/usr/lib/x86_64-linux-gnu/dri/

NOTE: If that path does not allow this to work, then often the following path will:

unset LIBVA_DRIVERS_PATH
export LIBVA_DRIVERS_PATH=/usr/lib/dri/

Try,

export LIBVA_DRI3_DISABLE=1