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====== Ubuntu - GPU - Vulkan - Set Vulkan Driver ======

There are a number of drivers for Vulkan.

Some provide better performance than others.

Drivers include:

  * **MESA RADV**:  The Mesa RADV Driver.
  * **MESA LLVMPIPE**:  The Mesa LLVMPIPE Driver.
  * **AMDVLK**:  The AMD Vulkan Driver.

See [[Ubuntu:GPU:Vulkan:Check what Vulkan implementations are currently installed|Check what Vulkan implementations are currently installed]]

----

===== Set AMDVLK as the Vulkan Driver =====

<code bash>
export VK_ICD_FILENAMES=/etc/vulkan/icd.d/amd_icd64.json
</code>

----

==== Check that the driver is being picked up ====

<code bash>
vulkaninfo | grep driver
</code>

returns:

<code bash>
	driverVersion     = 8388879 (0x80010f)
	driverID           = DRIVER_ID_AMD_OPEN_SOURCE
	driverName         = AMD open-source driver
	driverInfo         = 2023.Q2.3 (LLPC)
	driverUUID      = 414d442d-4c49-4e55-582d-445256000000
	driverUUID                        = 414d442d-4c49-4e55-582d-445256000000
	driverID                                             = DRIVER_ID_AMD_OPEN_SOURCE
	driverName                                           = AMD open-source driver
	driverInfo                                           = 2023.Q2.3 (LLPC)
	VK_KHR_driver_properties                    : extension revision 1
</code>

<WRAP info>
**NOTE:**  The **driverID** and other fields here show that the **AMD open-source driver**, **AMDLVK** is being used.

  * Test by running <code bash>vkcube</code>

</WRAP>

----

===== Set MESA LLVMPIPE as the Vulkan Driver =====

<code bash>
export VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json:/usr/share/vulkan/icd.d/lvp_icd.i686.json
</code>

----

==== Check that the driver is being picked up ====

<code bash>
vulkaninfo | grep driver
</code>

returns:

<code bash>
	driverVersion     = 1 (0x0001)
	driverID           = DRIVER_ID_MESA_LLVMPIPE
	driverName         = llvmpipe
	driverInfo         = Mesa 23.1.2 - kisak-mesa PPA (LLVM 15.0.7)
	driverUUID      = 6c6c766d-7069-7065-5555-494400000000
	driverUUID                        = 6c6c766d-7069-7065-5555-494400000000
	driverID                                             = DRIVER_ID_MESA_LLVMPIPE
	driverName                                           = llvmpipe
	driverInfo                                           = Mesa 23.1.2 - kisak-mesa PPA (LLVM 15.0.7)
	VK_KHR_driver_properties                     : extension revision 1
</code>

<WRAP info>
**NOTE:**  The **driverID** and other fields here show that the LLVMPIPE driver is being used.

  * Test by running <code bash>vkcube</code>

</WRAP>

----

===== Set MESA RADV as the Vulkan Driver =====

<code bash>
export VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/radeon_icd.x86_64.json:/usr/share/vulkan/icd.d/radeon_icd.i686.json
</code>

----

==== Check that the driver is being picked up ====

<code bash>
vulkaninfo | grep driver
</code>

returns:

<code bash>
	driverVersion     = 96473090 (0x5c01002)
	driverID           = DRIVER_ID_MESA_RADV
	driverName         = radv
	driverInfo         = Mesa 23.1.2 - kisak-mesa PPA
	driverUUID      = 414d442d-4d45-5341-2d44-525600000000
	driverUUID                        = 414d442d-4d45-5341-2d44-525600000000
	driverID                                             = DRIVER_ID_MESA_RADV
	driverName                                           = radv
	driverInfo                                           = Mesa 23.1.2 - kisak-mesa PPA
	VK_KHR_driver_properties                    : extension revision 1
</code>

<WRAP info>
**NOTE:**  The **driverID** and other fields here show that the RADV driver is being used.

  * Test by running <code bash>vkcube</code>

</WRAP>