====== Ubuntu - GPU - VDPAU - Override the driver for VDPAU ======

The driver for VDPAU can be overridden by using the **VDPAU_DRIVER** environment variable.

The correct driver name depends on your setup:

  * For Intel graphics you need to set it to va_gl.
  * For the open source AMD driver set it to the proper driver version depending on your GPU.
  * For the open source Nouveau driver set it to nouveau.
  * For NVIDIA's proprietary version set it to nvidia.

----

===== Example =====

<code bash>
unset VDPAU_DRIVER
export VDPAU_DRIVER=radeonsi
</code>

<WRAP info>
**NOTE:**

  * The installed drivers are often found in **/usr/lib/x86_64-linux-gnu/vdpau/** or **/usr/lib/vdpau/**. 
    * They are used as **/usr/lib/x86_64-linux-gnu/vdpau/libvdpau_${VDPAU_DRIVER}.so**.

  * Some drivers are installed several times under different names for compatibility reasons.
    * You can see which by running: <code bash>sha1sum /usr/lib/x86_64-linux-gnu/vdpau/*</code>

  * For hybrid setups (both NVIDIA and AMD), it may be necessary to set the **DRI_PRIME** environment variable. 
    * For more information see PRIME.

</WRAP>

----

===== References =====

https://wiki.archlinux.org/title/Hardware_video_acceleration#Configuring_VDPAU