I’m not using flatpak but out of curiosity I looked for your issue and found this issue in github.
Based on this comment, it seems to work for nvidia by installing nvidia drivers via flatpak.
Maybe you can try it 
What drivers are you using during this? proprietary? this is on mint?
what happens with darktable not on flatpak?
darktable-cltest?
Thanks for your input. The nvidia drivers are installed, and darktable/opencl on nvidia was fine until recently. I had run across that thread in my research, and no help to be found there. I’ve posted on Nvidia, will follow up with a bug report to them, and also to MX23 forum.
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Hi g-man,
This occurs with the Nvidia 595 prop drivers, org.freedesktop.Platform.GL.nvidia-525-125-06 drivers, on an MX 23 plasma distro.
darktable non-flatpak is not an option, current versions not available in distro packages.
I’ll see about adding the results of darktable-cltest when I reinstall Nvidia drivers, hopefully when it’s working, and when it’s broken.
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Can you build it from source? MX is a Debian-based distro, it seems, and Claes uses Debian, too. There are instructions for Debian in the guide (though I only tested the ones for Ubuntu, which is actually also a Debian derivative, but has different instructions listed): GitHub - darktable-org/darktable: darktable is an open source photography workflow application and raw developer
Hi Kofa-
I don’t know if I can build it. I’ve done it before, but on a different distro and ran into all kinds of dependencies that needed to be hunted down. Not the best use of my time I’m afraid.
I’ve been able to get it going again on flatpak with the Nvidia drivers, but I’m not sure how long it will last. Right now, after the first reboot after installing the opencl components (I took a screenshot of what was needed and filed it away), I have opencl and audio as well. I noticed that my clinfo returned 1 platform this time, rather than 2, so maybe something has changed.
Thanks for your suggestion. Claes may have moved on from Debian stuff, he hops around a bit. He was very helpful to me in the past.
If I lose opencl again in darktable, I might try the Ansel app image, see if it’s working out of curiosity.
But like I said, I’ve had dt Flatpak and opencl working fine for several months now on this system, which has been very stable in all other aspects. Something happened in the past two weeks, and the guys at MX have requested info to see if it’s anything on their end.
Best Regards,
ps: I’m attaching a screenshot of the packages I needed get the opencl component working on my system in the hopes it may help someone else. I followed the flatseal settings recommended elsewhere on this forum
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You probably got an nvidia driver update, you need to update the flatpak driver to the same version.
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No. Not yet.
Can I assist in some way?
Have fun!
Claes in Lund, Sweden
Hi Mica-
I did check and both matched.
After yesterdays install of Nvidia, I’m back up with opencl, and audio. I hopefully will continue to have some stability for the next month.
Thanks for checking in.
HI Claes-
Thanks for the offer, nothing to do yet. I’m trying to keep on the flatpak for the next month that I’ll be working from my desktop PC. I’ll build a new one next year and see whether I want to pursue a dt build or not.
Thanks!
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Here are several terminal output files:
First one, clinfo from current cold boot, no opencl in darktable:
clinfo
Number of platforms 1
Platform Name NVIDIA CUDA
Platform Vendor NVIDIA Corporation
Platform Version OpenCL 3.0 CUDA 12.0.151
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_device_uuid cl_khr_pci_bus_info cl_khr_external_semaphore cl_khr_external_memory cl_khr_external_semaphore_opaque_fd cl_khr_external_memory_opaque_fd
Platform Extensions with Version cl_khr_global_int32_base_atomics 0x400000 (1.0.0)
cl_khr_global_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_local_int32_base_atomics 0x400000 (1.0.0)
cl_khr_local_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_fp64 0x400000 (1.0.0)
cl_khr_3d_image_writes 0x400000 (1.0.0)
cl_khr_byte_addressable_store 0x400000 (1.0.0)
cl_khr_icd 0x400000 (1.0.0)
cl_khr_gl_sharing 0x400000 (1.0.0)
cl_nv_compiler_options 0x400000 (1.0.0)
cl_nv_device_attribute_query 0x400000 (1.0.0)
cl_nv_pragma_unroll 0x400000 (1.0.0)
cl_nv_copy_opts 0x400000 (1.0.0)
cl_nv_create_buffer 0x400000 (1.0.0)
cl_khr_int64_base_atomics 0x400000 (1.0.0)
cl_khr_int64_extended_atomics 0x400000 (1.0.0)
cl_khr_device_uuid 0x400000 (1.0.0)
cl_khr_pci_bus_info 0x400000 (1.0.0)
cl_khr_external_semaphore 0x9000 (0.9.0)
cl_khr_external_memory 0x9000 (0.9.0)
cl_khr_external_semaphore_opaque_fd 0x9000 (0.9.0)
cl_khr_external_memory_opaque_fd 0x9000 (0.9.0)
Platform Numeric Version 0xc00000 (3.0.0)
Platform Extensions function suffix NV
Platform Host timer resolution 0ns
Platform External memory handle types Opaque FD
Platform External semaphore import types Opaque FD
Platform External semaphore export types Opaque FD
Platform Name NVIDIA CUDA
Number of devices 1
Device Name NVIDIA GeForce GTX 1060 3GB
Device Vendor NVIDIA Corporation
Device Vendor ID 0x10de
Device Version OpenCL 3.0 CUDA
Device UUID 0863542b-9ed8-b2b7-341c-4f50a01a8741
Driver UUID 0863542b-9ed8-b2b7-341c-4f50a01a8741
Valid Device LUID No
Device LUID 6d69-637300000000
Device Node Mask 0
Device Numeric Version 0xc00000 (3.0.0)
Driver Version 525.125.06
Device OpenCL C Version OpenCL C 1.2
Device OpenCL C all versions OpenCL C 0x400000 (1.0.0)
OpenCL C 0x401000 (1.1.0)
OpenCL C 0x402000 (1.2.0)
OpenCL C 0xc00000 (3.0.0)
Device OpenCL C features __opencl_c_fp64 0xc00000 (3.0.0)
__opencl_c_images 0xc00000 (3.0.0)
__opencl_c_int64 0xc00000 (3.0.0)
__opencl_c_3d_image_writes 0xc00000 (3.0.0)
Latest conformance test passed v2022-10-05-00
Device Type GPU
Device Topology (NV) PCI-E, 0000:01:00.0
Device PCI bus info (KHR) PCI-E, 0000:01:00.0
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 9
Max clock frequency 1835MHz
Compute Capability (NV) 6.1
Device Partition (core)
Max number of sub-devices 1
Supported partition types None
Supported affinity domains (n/a)
Max work item dimensions 3
Max work item sizes 1024x1024x64
Max work group size 1024
Preferred work group size multiple (device) 32
Preferred work group size multiple (kernel) 32
Warp size (NV) 32
Max sub-groups per work group 0
Preferred / native vector sizes
char 1 / 1
short 1 / 1
int 1 / 1
long 1 / 1
half 0 / 0 (n/a)
float 1 / 1
double 1 / 1 (cl_khr_fp64)
Half-precision Floating-point support (n/a)
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations Yes
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Address bits 64, Little-Endian
External memory handle types Opaque FD
External semaphore import types Opaque FD
External semaphore export types Opaque FD
Global memory size 3157065728 (2.94GiB)
Error Correction support No
Max memory allocation 789266432 (752.7MiB)
Unified memory for Host and Device No
Integrated memory (NV) No
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing No
Fine-grained system sharing No
Atomics No
Minimum alignment for any data type 128 bytes
Alignment of base address 4096 bits (512 bytes)
Preferred alignment for atomics
SVM 0 bytes
Global 0 bytes
Local 0 bytes
Atomic memory capabilities relaxed, work-group scope
Atomic fence capabilities relaxed, acquire/release, work-group scope
Max size for global variable 0
Preferred total size of global vars 0
Global Memory cache type Read/Write
Global Memory cache size 442368 (432KiB)
Global Memory cache line size 128 bytes
Image support Yes
Max number of samplers per kernel 32
Max size for 1D images from buffer 268435456 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 0 bytes
Pitch alignment for 2D image buffers 0 pixels
Max 2D image size 16384x32768 pixels
Max 3D image size 16384x16384x16384 pixels
Max number of read image args 256
Max number of write image args 16
Max number of read/write image args 0
Pipe support No
Max number of pipe args 0
Max active pipe reservations 0
Max pipe packet size 0
Local memory type Local
Local memory size 49152 (48KiB)
Registers per block (NV) 65536
Max number of constant args 9
Max constant buffer size 65536 (64KiB)
Generic address space support No
Max size of kernel argument 4352 (4.25KiB)
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Device enqueue capabilities (n/a)
Queue properties (on device)
Out-of-order execution No
Profiling No
Preferred size 0
Max size 0
Max queues on device 0
Max events on device 0
Prefer user sync for interop No
Profiling timer resolution 1000ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Non-uniform work-groups No
Work-group collective functions No
Sub-group independent forward progress No
Kernel execution timeout (NV) Yes
Concurrent copy and kernel execution (NV) Yes
Number of async copy engines 2
IL version (n/a)
ILs with version (n/a)
printf() buffer size 1048576 (1024KiB)
Built-in kernels (n/a)
Built-in kernels with version (n/a)
Device Extensions cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_device_uuid cl_khr_pci_bus_info cl_khr_external_semaphore cl_khr_external_memory cl_khr_external_semaphore_opaque_fd cl_khr_external_memory_opaque_fd
Device Extensions with Version cl_khr_global_int32_base_atomics 0x400000 (1.0.0)
cl_khr_global_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_local_int32_base_atomics 0x400000 (1.0.0)
cl_khr_local_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_fp64 0x400000 (1.0.0)
cl_khr_3d_image_writes 0x400000 (1.0.0)
cl_khr_byte_addressable_store 0x400000 (1.0.0)
cl_khr_icd 0x400000 (1.0.0)
cl_khr_gl_sharing 0x400000 (1.0.0)
cl_nv_compiler_options 0x400000 (1.0.0)
cl_nv_device_attribute_query 0x400000 (1.0.0)
cl_nv_pragma_unroll 0x400000 (1.0.0)
cl_nv_copy_opts 0x400000 (1.0.0)
cl_nv_create_buffer 0x400000 (1.0.0)
cl_khr_int64_base_atomics 0x400000 (1.0.0)
cl_khr_int64_extended_atomics 0x400000 (1.0.0)
cl_khr_device_uuid 0x400000 (1.0.0)
cl_khr_pci_bus_info 0x400000 (1.0.0)
cl_khr_external_semaphore 0x9000 (0.9.0)
cl_khr_external_memory 0x9000 (0.9.0)
cl_khr_external_semaphore_opaque_fd 0x9000 (0.9.0)
cl_khr_external_memory_opaque_fd 0x9000 (0.9.0)
NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) No platform
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) No platform
clCreateContext(NULL, ...) [default] No platform
clCreateContext(NULL, ...) [other] Success [NV]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) No platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) No platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) Invalid device type for platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) No platform
Second output from command line start, no opencl after cold boot:
$ flatpak run org.darktable.Darktable -d opencl
0.0225 [lcms2] error 9: Wrong output color space on transform
0.0225 [lcms2] error 9: Wrong output color space on transform
0.1206 [dt_get_sysresource_level] switched to 2 as `large'
0.1207 total mem: 31956MB
0.1207 mipmap cache: 3994MB
0.1207 available mem: 21844MB
0.1207 singlebuff: 499MB
0.1207 OpenCL tune mem: WANTED
0.1207 OpenCL pinned: WANTED
[opencl_init] opencl related configuration options:
[opencl_init] opencl: ON
[opencl_init] opencl_scheduling_profile: 'very fast GPU'
[opencl_init] opencl_library: 'default path'
[opencl_init] opencl_device_priority: '*/!0,*/*/*/!0,*'
[opencl_init] opencl_mandatory_timeout: 400
0.1221 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
0.1221 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
[opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded
[opencl_init] found 1 platform
[opencl_init] no devices found for Mesa (vendor) - Clover (name)
[opencl_init] found 0 device
[opencl_init] FINALLY: opencl is NOT AVAILABLE and NOT ENABLED.
error: The following untracked working tree files would be overwritten by merge:
contrib/select_non_existing.lua
locale/de_DE/LC_MESSAGES/select_non_existing.po
Please move or remove them before you merge.
Aborting
Third one, after initial opencl install, audio working and opencl in darktable available:
$ flatpak run org.darktable.Darktable -d opencl
0.0483 [lcms2] error 9: Wrong output color space on transform
0.0484 [lcms2] error 9: Wrong output color space on transform
1.4687 [dt_get_sysresource_level] switched to 2 as `large’
1.4688 total mem: 31956MB
1.4688 mipmap cache: 3994MB
1.4688 available mem: 21844MB
1.4688 singlebuff: 499MB
1.4688 OpenCL tune mem: WANTED
1.4688 OpenCL pinned: WANTED
[opencl_init] opencl related configuration options:
[opencl_init] opencl: ON
[opencl_init] opencl_scheduling_profile: ‘very fast GPU’
[opencl_init] opencl_library: ‘default path’
[opencl_init] opencl_device_priority: ‘/!0,///!0,*’
[opencl_init] opencl_mandatory_timeout: 400
1.4739 [dt_dlopencl_init] could not find default opencl runtime library ‘libOpenCL’
1.4740 [dt_dlopencl_init] could not find default opencl runtime library ‘libOpenCL.so’
[opencl_init] opencl library ‘libOpenCL.so.1’ found on your system and loaded
[opencl_init] found 2 platforms
[opencl_init] no devices found for Mesa (vendor) - Clover (name)
[opencl_init] found 1 device
[dt_opencl_device_init]
DEVICE: 0: ‘NVIDIA GeForce GTX 1060 3GB’
PLATFORM NAME & VENDOR: NVIDIA CUDA, NVIDIA Corporation
CANONICAL NAME: nvidiacudanvidiageforcegtx10603gb
DRIVER VERSION: 525.125.06
DEVICE VERSION: OpenCL 3.0 CUDA, SM_20 SUPPORT
DEVICE_TYPE: GPU
GLOBAL MEM SIZE: 3011 MB
MAX MEM ALLOC: 753 MB
MAX IMAGE SIZE: 16384 x 32768
MAX WORK GROUP SIZE: 1024
MAX WORK ITEM DIMENSIONS: 3
MAX WORK ITEM SIZES: [ 1024 1024 64 ]
ASYNC PIXELPIPE: NO
PINNED MEMORY TRANSFER: WANTED
MEMORY TUNING: WANTED
FORCED HEADROOM: 400
AVOID ATOMICS: NO
MICRO NAP: 250
ROUNDUP WIDTH: 16
ROUNDUP HEIGHT: 16
CHECK EVENT HANDLES: 128
PERFORMANCE: 7.260
TILING ADVANTAGE: 0.000
DEFAULT DEVICE: NO
KERNEL BUILD DIRECTORY: /app/share/darktable/kernels
KERNEL DIRECTORY: /home/marcs/.var/app/org.darktable.Darktable/cache/darktable/cached_v1_kernels_for_NVIDIACUDANVIDIAGeForceGTX10603GB_52512506
CL COMPILER OPTION: -cl-fast-relaxed-math
KERNEL LOADING TIME: 0.0998 sec
[opencl_init] OpenCL successfully initialized. Internal numbers and names of available devices:
[opencl_init] 0 ‘NVIDIA CUDA NVIDIA GeForce GTX 1060 3GB’
[opencl_init] FINALLY: opencl is AVAILABLE and ENABLED.
[dt_opencl_update_priorities] these are your device priorities:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[dt_opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
[dt_opencl_update_priorities] these are your device priorities:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[dt_opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
error: The following untracked working tree files would be overwritten by merge:
contrib/select_non_existing.lua
locale/de_DE/LC_MESSAGES/select_non_existing.po
Please move or remove them before you merge.
Aborting
[dt_opencl_update_priorities] these are your device priorities:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[dt_opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
[dt_opencl_update_priorities] these are your device priorities:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[dt_opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
[dt_opencl_update_priorities] these are your device priorities:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[dt_opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
[dt_opencl_update_priorities] these are your device priorities:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[dt_opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
[dt_opencl_update_priorities] these are your device priorities:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[dt_opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[dt_opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
Again, the problem I'm having is that opencl comes and goes. Audio seems stable for now.
Any guesses?
Edit: It seems if I start an audio player right after a cold boot, I have no openCL in dt. If I shut down audio, restart dt, I have openCL again.
If I start dt right after a cold boot, I have openCl. If I then start audio, I still have openCL.
Also, I see that OpenSuse build service seems to have a current build of darktable available. If I install this, what can I do to get my configuration moved to the new install?
This MX23 system uses SystemV Init, not SystemD. Some sort of "shim" is involved in running programs that need SystemD.
Any chance this is at the root of the problem?
Why don’t you try this?
I’m sorry, I don’t understand, try what? The openSuse build?
The OBS link I posted above.
Thanks, I’ve got the link now.
Sorry for the wait. I’ve got the dt from OpenSuse build installed, and overwrote the newly created darktable config folder with the one from my flatpak. I have openCl active, and my files are current, as well as modules, preferences etc. I’ll continue working with this .deb package for a while and see how it goes. Hopefully, it will perform with stability. And also, when the next stable release of darktable is announced, the OSB will be able to provide me with a new package.
Thanks for your help!
I’ll report back after I’ve done some more work with this version.
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