BlendLuxCore FAQ - Revision history

CodeHD: /* I can not enable the BlendLuxCore addon, it shows errors */

2026-04-11T10:21:03Z

I can not enable the BlendLuxCore addon, it shows errors

← Older revision		Revision as of 12:21, 11 April 2026
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	=== I can not enable the BlendLuxCore addon, it shows errors ===		=== I can not enable the BlendLuxCore addon, it shows errors ===

			'''Note: This section applies to older BlendLuxCore versions up to v2.9alpha'''

	Most problems in this area stem from broken graphics driver installations. Try to re-install or update your graphics driver.		Most problems in this area stem from broken graphics driver installations. Try to re-install or update your graphics driver.

CodeHD: Add a new section about CUDA/OptiX

2026-04-11T10:19:04Z

Add a new section about CUDA/OptiX

← Older revision		Revision as of 12:19, 11 April 2026
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	= Frequently Asked Questions =		= Frequently Asked Questions =

			=== When trying to use CUDA/OptiX, Blender crashes ===

			This can be a different manifestation of the issue described below (CUDA_ERROR_UNSUPPORTED_PTX_VERSION). Try to upgrade the nvidia driver to the latest version, or try the studio driver branches for a latest stable version.

			Specifically, this has been observed with nvrtc13 in combination with drivers <590.

	=== When trying to use CUDA/OptiX, I get the error message: <code>RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain.</code> ===		=== When trying to use CUDA/OptiX, I get the error message: <code>RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain.</code> ===

CodeHD: Add "could not import pyluxcore" section

2025-07-21T08:33:11Z

Add "could not import pyluxcore" section

← Older revision		Revision as of 10:33, 21 July 2025
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	= Frequently Asked Questions =		= Frequently Asked Questions =

	=== When trying to use CUDA, I get the error message: <code>RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain.</code> ===		=== When trying to use CUDA/OptiX, I get the error message: <code>RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain.</code> ===

	Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by LuxCore runtime compiler cannot be run by your driver.		Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by LuxCore runtime compiler cannot be run by your driver.

	Please upgrade your nvidia driver to latest version, or at least to a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7		Please upgrade your nvidia driver to latest version, or at least to a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7

			=== After installation, I get the error message "could not import pyluxcore" ===

			"pyluxcore" is the binary core library. BlendLuxCore downloads and installs the correct version for your system during installation. This error indicates something went wrong with this installation. Possible solutions are:
			* Check that online access is allowed in the Blender preferences.
			* Download may be restricted in company networks. You can try an [https://wiki.luxcorerender.org/BlendLuxCore_Installation#Offline_Installation offline-installation].

	=== I can not enable the BlendLuxCore addon, it shows errors ===		=== I can not enable the BlendLuxCore addon, it shows errors ===

Howetuft: /* How can I compile kernels from the command line? */

2025-05-20T04:31:31Z

How can I compile kernels from the command line?

← Older revision		Revision as of 06:31, 20 May 2025
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	=== How can I compile kernels from the command line? ===		=== How can I compile kernels from the command line? ===
	Here is a way to compile kernels from the command line, for the ~~last~~ version of ~~BlendLuxCore~~:		Here is a way to compile kernels from the command line (out of Blender), for the latest version of pyluxcore:
	<pre>		<pre>
	pip install pyluxcore --upgrade		pip install pyluxcore --upgrade

Howetuft: /* Frequently Asked Questions */

2025-05-20T04:30:15Z

Frequently Asked Questions

← Older revision		Revision as of 06:30, 20 May 2025
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	Yes. In the render properties, LuxCore Tools panel, enable "FileSaver". Then render with F12.		Yes. In the render properties, LuxCore Tools panel, enable "FileSaver". Then render with F12.

			=== How can I compile kernels from the command line? ===
			Here is a way to compile kernels from the command line, for the last version of BlendLuxCore:
			<pre>
			pip install pyluxcore --upgrade
			python -c "import pyluxcore; pyluxcore.Init(); pyluxcore.KernelCacheFill()"
			</pre>

	= Getting Help =		= Getting Help =

Howetuft: /* Frequently Asked Questions */

2025-05-14T05:53:37Z

Frequently Asked Questions

← Older revision		Revision as of 07:53, 14 May 2025
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	=== When trying to use CUDA, I get the error message: <code>RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain.</code> ===		=== When trying to use CUDA, I get the error message: <code>RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain.</code> ===

	Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by ~~the~~ runtime compiler cannot be run by ~~the~~ driver.		Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by LuxCore runtime compiler cannot be run by your driver.

	Please upgrade your nvidia driver to latest version, or at least to a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7		Please upgrade your nvidia driver to latest version, or at least to a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7

Howetuft: /* Frequently Asked Questions */

2025-05-14T05:53:08Z

Frequently Asked Questions

← Older revision		Revision as of 07:53, 14 May 2025
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	= Frequently Asked Questions =		= Frequently Asked Questions =

	=== When trying to use CUDA, I get the error message <code>"RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain."</code> ===		=== When trying to use CUDA, I get the error message: <code>RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain.</code> ===

	Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.		Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.

Howetuft: /* When trying to use CUDA, I get the error message "RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain." */

2025-05-14T05:52:40Z

When trying to use CUDA, I get the error message "RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain."

← Older revision		Revision as of 07:52, 14 May 2025
Line 1:		Line 1:
	= Frequently Asked Questions =		= Frequently Asked Questions =

	=== When trying to use CUDA, I get the error message "RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain." ===		=== When trying to use CUDA, I get the error message <code>"RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain."</code> ===

	Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.		Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.

Howetuft: /* I get error message "RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain." when trying to use CUDA */

2025-05-14T05:52:14Z

I get error message "RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain." when trying to use CUDA

← Older revision		Revision as of 07:52, 14 May 2025
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	= Frequently Asked Questions =		= Frequently Asked Questions =

	=== I get error message "RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain." ~~when trying to use CUDA~~ ===		=== When trying to use CUDA, I get the error message "RUNTIME ERROR: CUDA driver API error CUDA_ERROR_UNSUPPORTED_PTX_VERSION (code: 222, file:.../cuda.cpp, line: xxx): the provided PTX was compiled with an unsupported toolchain." ===

	Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.		Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.

	Please upgrade your nvidia driver to latest version, or at least to a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7		Please upgrade your nvidia driver to latest version, or at least to a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7


	=== I can not enable the BlendLuxCore addon, it shows errors ===		=== I can not enable the BlendLuxCore addon, it shows errors ===

Howetuft: /* Frequently Asked Questions */

2025-05-14T05:51:39Z

Frequently Asked Questions

← Older revision		Revision as of 07:51, 14 May 2025
Line 5:		Line 5:
	Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.		Your nvidia driver is too old compared to nvidia runtime compiler used by LuxCore, so the code compiled by the runtime compiler cannot be run by the driver.

	Please upgrade your driver to latest version, or at least a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7		Please upgrade your nvidia driver to latest version, or at least to a suitable version with regard to runtime compiler: https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html#id7