OpenCL problems again (Solved)

Software darktable
1

So now it seems to be my turn to ask for some OpenCL help, as OpenCL is not working. I just got a new laptop and installed Linux Mint 22 on it. It’s got an Nvidia RTX 4060 GPU, and I have the Nvidia 550 driver installed via Driver Manager. Darktable is 4.8.1 from OBS.

On my old laptop, I have darktable 4.9, also from OBS, and also Nvidia 550 and OpenCL is working fine.

On the new one, darktable reports OpenCL as not available, and clinfo just says:

~$ clinfo
Number of platforms 0

ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.3.2
ICD loader Profile OpenCL 3.0

I was reading this thread and tried as suggested
dpkg -l | grep ^ii|grep -i nvidia which returns this on both systems:

> ~$ dpkg -l | grep ^ii|grep -i nvidia
> ii  libnvidia-cfg1-550:amd64                   550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA binary OpenGL/GLX configuration library
> ii  libnvidia-common-550                       550.107.02-0ubuntu0.24.04.1                all          Shared files used by the NVIDIA libraries
> ii  libnvidia-compute-550:amd64                550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA libcompute package
> ii  libnvidia-compute-550:i386                 550.107.02-0ubuntu0.24.04.1                i386         NVIDIA libcompute package
> ii  libnvidia-decode-550:amd64                 550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA Video Decoding runtime libraries
> ii  libnvidia-decode-550:i386                  550.107.02-0ubuntu0.24.04.1                i386         NVIDIA Video Decoding runtime libraries
> ii  libnvidia-egl-wayland1:amd64               1:1.1.13-1build1                           amd64        Wayland EGL External Platform library -- shared library
> ii  libnvidia-egl-wayland1:i386                1:1.1.13-1build1                           i386         Wayland EGL External Platform library -- shared library
> ii  libnvidia-encode-550:amd64                 550.107.02-0ubuntu0.24.04.1                amd64        NVENC Video Encoding runtime library
> ii  libnvidia-encode-550:i386                  550.107.02-0ubuntu0.24.04.1                i386         NVENC Video Encoding runtime library
> ii  libnvidia-extra-550:amd64                  550.107.02-0ubuntu0.24.04.1                amd64        Extra libraries for the NVIDIA driver
> ii  libnvidia-fbc1-550:amd64                   550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA OpenGL-based Framebuffer Capture runtime library
> ii  libnvidia-fbc1-550:i386                    550.107.02-0ubuntu0.24.04.1                i386         NVIDIA OpenGL-based Framebuffer Capture runtime library
> ii  libnvidia-gl-550:amd64                     550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
> ii  libnvidia-gl-550:i386                      550.107.02-0ubuntu0.24.04.1                i386         NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
> ii  nvidia-compute-utils-550                   550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA compute utilities
> ii  nvidia-dkms-550                            550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA DKMS package
> ii  nvidia-driver-550                          550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA driver metapackage
> ii  nvidia-firmware-550-550.107.02             550.107.02-0ubuntu0.24.04.1                amd64        Firmware files used by the kernel module
> ii  nvidia-kernel-common-550                   550.107.02-0ubuntu0.24.04.1                amd64        Shared files used with the kernel module
> ii  nvidia-kernel-source-550                   550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA kernel source package
> ii  nvidia-prime                               0.8.17.2                                   all          Tools to enable NVIDIA's Prime
> ii  nvidia-prime-applet                        1.4.2                                      all          An applet for NVIDIA Prime
> ii  nvidia-settings                            510.47.03-0ubuntu4                         amd64        Tool for configuring the NVIDIA graphics driver
> ii  nvidia-utils-550                           550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA driver support binaries
> ii  screen-resolution-extra                    0.18.3                                     all          Extension for the nvidia-settings control panel
> ii  xserver-xorg-video-nvidia-550              550.107.02-0ubuntu0.24.04.1                amd64        NVIDIA binary Xorg driver

So the same packages are installed on both. Any idea why I have no OpenCL on the new machine and how to get it to work? Anything more you need to know?

2

What about darktable -d opencl and darktable-cltest?

3

Ah, of course.

darktable-cltest:

~$ darktable-cltest
darktable 4.8.1
Copyright (C) 2012-2024 Johannes Hanika and other contributors.

Compile options:
  Bit depth              -> 64 bit
  Debug                  -> DISABLED
  SSE2 optimizations     -> ENABLED
  OpenMP                 -> ENABLED
  OpenCL                 -> ENABLED
  Lua                    -> ENABLED  - API version 9.3.0
  Colord                 -> ENABLED
  gPhoto2                -> ENABLED
  GMIC                   -> ENABLED  - Compressed LUTs are supported
  GraphicsMagick         -> ENABLED
  ImageMagick            -> DISABLED
  libavif                -> DISABLED
  libheif                -> ENABLED
  libjxl                 -> ENABLED
  OpenJPEG               -> ENABLED
  OpenEXR                -> ENABLED
  WebP                   -> ENABLED

See https://www.darktable.org/resources/ for detailed documentation.
See https://github.com/darktable-org/darktable/issues/new/choose to report bugs.

     0,0151 [dt_get_sysresource_level] switched to 1 as `default'
     0,0152   total mem:       15610MB
     0,0152   mipmap cache:    1951MB
     0,0152   available mem:   7805MB
     0,0152   singlebuff:      121MB
     0.0175 [opencl_init] opencl disabled via darktable preferences
     0.0175 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
     0.0176 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
     0.0176 [opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded, preference 'default path'
     1.0589 [opencl_init] 0 platforms detected, error: Unknown OpenCL error
     1.0589 [opencl_init] FINALLY: opencl PREFERENCE=OFF is NOT AVAILABLE and NOT ENABLED.

darktable -d opencl:

~$ darktable -d opencl
darktable 4.8.1
Copyright (C) 2012-2024 Johannes Hanika and other contributors.

Compile options:
  Bit depth              -> 64 bit
  Debug                  -> DISABLED
  SSE2 optimizations     -> ENABLED
  OpenMP                 -> ENABLED
  OpenCL                 -> ENABLED
  Lua                    -> ENABLED  - API version 9.3.0
  Colord                 -> ENABLED
  gPhoto2                -> ENABLED
  GMIC                   -> ENABLED  - Compressed LUTs are supported
  GraphicsMagick         -> ENABLED
  ImageMagick            -> DISABLED
  libavif                -> DISABLED
  libheif                -> ENABLED
  libjxl                 -> ENABLED
  OpenJPEG               -> ENABLED
  OpenEXR                -> ENABLED
  WebP                   -> ENABLED

See https://www.darktable.org/resources/ for detailed documentation.
See https://github.com/darktable-org/darktable/issues/new/choose to report bugs.

     0,0379 [dt_get_sysresource_level] switched to 1 as `default'
     0,0379   total mem:       15610MB
     0,0379   mipmap cache:    1951MB
     0,0379   available mem:   7805MB
     0,0379   singlebuff:      121MB
     0.0404 [opencl_init] opencl disabled via darktable preferences
     0.0405 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
     0.0405 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
     0.0406 [opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded, preference 'default path'
     1.1136 [opencl_init] 0 platforms detected, error: Unknown OpenCL error
     1.1136 [opencl_init] FINALLY: opencl PREFERENCE=OFF is NOT AVAILABLE and NOT ENABLED.

Seems like they both do the same?

4

Since you have nvidia-prime are you sure your GPU is switched on before launching DT?

5

Yes, it’s on “Nvidia on demand”, just like on the old laptop, where it works.

6

Can you just turn it “on” instead of “on demand”?

7

There is some OS issue going on since clinfo is not finding the GPU. Do you have secure boot on? Sometimes I need to restart the system.

8

I tried, but no difference.

9

What is safeboot, is it the same as Secureboot? I think it is on. I have restarted the systems many times, no difference.

Yes, I too suspect something on the OS level. If we don’t find a solution, I might just install Mint 21.3 and see if that helps. I haven’t done much on this machine yet so no big deal, but it would be nice to avoid.

10

Isn’t there a package named something like nvidia-opencl?

11

Not that I can see. I find nvidia-opencl-dev, which is not installed and should not be necessary either.

12

I think you should ask in the Mint Forums for nvidia help.

13

Yeah, maybe I’ll try that. Thanks to both of you, though.

14

Update: I went to the Mint forums and I found a pinned post about these things. It was a Secureboot issue, I had overlooked a configuration step. So now opencl works, and also my external monitor, which suffered from the same issue.

It’s so much easier to be lazy and come here first, since I stop by here every day, but I should of course have gone to the Mint forums first.

In case others have this problem, here’s a link to the forum post:
https://forums.linuxmint.com/viewtopic.php?t=424779

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