Unable to Print with dt

Darktable 4.8.1, Manjaro/Arch/XFCE
Using TurboPrint and CUPS with Canon Pixma iX6820 Printer
The Canon-Turboprint is showing correctly on the print screen but no image is displayed and all other options are locked or blank.
Printer correctly prints out of other Programs
Any idea how to debug this?

1 Like

Start darktable from the cli darktable -d common, then do as little as possible to recreate the issue. Share the terminal output here.

Here is the result:

[david@Dell-g5 ~]$ darktable -d common
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                -> ENABLED
  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.

     0.0001 application_directory: /usr/bin
     0.0001 darktable.datadir: /usr/share/darktable
     0.0001 darktable.plugindir: /usr/lib/darktable
     0.0001 darktable.localedir: /usr/share/locale
     0.0001 darktable.configdir: /home/david/.config/darktable
     0.0002 darktable.cachedir: /home/david/.cache/darktable
     0.0002 darktable.sharedir: /usr/share
     0.0002 darktable.tmpdir: /tmp
     0.0002 new_xdg_data_dirs: (null)
     0.3175 [dt_worker_threads] using 6 worker threads
     0.3207 [dt_get_sysresource_level] switched to 2 as `large'
     0.3208   total mem:       15846MB
     0.3208   mipmap cache:    1980MB
     0.3208   available mem:   10832MB
     0.3208   singlebuff:      247MB
     0.3265 [opencl_init] opencl library 'libOpenCL' found on your system and loaded, preference 'default path'
     0.3369 [opencl_init] found 1 platform
[opencl_init] found 1 device

[dt_opencl_device_init]
   DEVICE:                   0: 'NVIDIA GeForce GTX 1660'
   CONF KEY:                 cldevice_v5_nvidiacudanvidiageforcegtx1660
   PLATFORM, VENDOR & ID:    NVIDIA CUDA, NVIDIA Corporation, ID=4318
   CANONICAL NAME:           nvidiacudanvidiageforcegtx1660
   DRIVER VERSION:           550.144.03
   DEVICE VERSION:           OpenCL 3.0 CUDA, SM_20 SUPPORT
   DEVICE_TYPE:              GPU, dedicated mem
   GLOBAL MEM SIZE:          5927 MB
   MAX MEM ALLOC:            1482 MB
   MAX IMAGE SIZE:           32768 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:   NO
   USE HEADROOM:             600Mb
   AVOID ATOMICS:            NO
   MICRO NAP:                250
   ROUNDUP WIDTH & HEIGHT    16x16
   CHECK EVENT HANDLES:      128
   TILING ADVANTAGE:         0.000
   DEFAULT DEVICE:           NO
   KERNEL BUILD DIRECTORY:   /usr/share/darktable/kernels
   KERNEL DIRECTORY:         /home/david/.cache/darktable/cached_v3_kernels_for_NVIDIACUDANVIDIAGeForceGTX1660_55014403
   CL COMPILER OPTION:       -cl-fast-relaxed-math
   CL COMPILER COMMAND:      -w -cl-fast-relaxed-math  -DNVIDIA_SM_20=1 -DNVIDIA=1 -I"/usr/share/darktable/kernels"
   KERNEL LOADING TIME:       0.0136 sec
[opencl_init] OpenCL successfully initialized. internal numbers and names of available devices:
[opencl_init]		0	'NVIDIA CUDA NVIDIA GeForce GTX 1660'
     0.4096 [opencl_init] FINALLY: opencl PREFERENCE=ON is AVAILABLE and ENABLED.
[opencl_init] opencl_scheduling_profile: 'very fast GPU'
[opencl_init] opencl_device_priority: '*/!0,*/*/*/!0,*'
[opencl_init] opencl_mandatory_timeout: 400
[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
     0.4546 [dt_worker_threads] using 6 worker threads
   109.0804 [avif_open] failed to parse `/run/media/david/IMAGES/2025/20250201_Sooke-Snow/20250201_0014.RAF': BMFF parsing failed
   109.0804 [rawspeed_open] extensions list to ignore: `cr3'
   109.1468 [dt_dev_read_history_ext] temporary history deleted
   109.1468 [dt_iop_reload_defaults] defaults reloaded for filmicrgb
   109.1468 [dt_iop_reload_defaults] defaults reloaded for basecurve
   109.1468 [dt_iop_reload_defaults] defaults reloaded for colorequal
   109.1468 [dt_iop_reload_defaults] defaults reloaded for colormapping
   109.1468 [dt_iop_reload_defaults] defaults reloaded for channelmixerrgb
   109.1472 [dt_iop_reload_defaults] defaults reloaded for colorin
   109.1472 [dt_iop_reload_defaults] defaults reloaded for crop
   109.1472 [dt_iop_reload_defaults] defaults reloaded for exposure
   109.1472 [dt_iop_reload_defaults] defaults reloaded for retouch
   109.1472 [dt_iop_reload_defaults] defaults reloaded for clipping
   109.1472 [dt_iop_reload_defaults] defaults reloaded for overlay
   109.1472 [dt_iop_reload_defaults] defaults reloaded for flip
   109.1472 [dt_iop_reload_defaults] defaults reloaded for ashift
   109.1472 [dt_iop_reload_defaults] defaults reloaded for cacorrectrgb
   109.1475 [dt_iop_reload_defaults] defaults reloaded for lens
   109.1475 [dt_iop_reload_defaults] defaults reloaded for rotatepixels
   109.1475 [dt_iop_reload_defaults] defaults reloaded for denoiseprofile
   109.1475 [dt_iop_reload_defaults] defaults reloaded for demosaic
   109.1475 [dt_iop_reload_defaults] defaults reloaded for rawdenoise
   109.1475 [dt_iop_reload_defaults] defaults reloaded for hotpixels
   109.1475 [dt_iop_reload_defaults] defaults reloaded for cacorrect
   109.1475 [dt_iop_reload_defaults] defaults reloaded for highlights
   109.1475 [dt_iop_reload_defaults] scene=YES, modern=YES, CAT=NO. D65 2.309 1.000 1.531, AS-SHOT 1.864 1.000 1.719
   109.1475 [dt_iop_reload_defaults] defaults reloaded for temperature
   109.1475 [dt_iop_reload_defaults] defaults reloaded for invert
   109.1475 [dt_iop_reload_defaults] defaults reloaded for rawprepare
   109.1501 [dt_dev_read_history_ext] temporary history initialised with default params and presets
   109.1501 [dt_dev_read_history_ext] temporary history merged with image history
   109.1501 [history] successfully loaded module rawprepare from history
			blendop v. 13:	version ok	params ok
			params v. 2:	version ok	params ok
   109.1501 [history] successfully loaded module demosaic from history
			blendop v. 13:	version ok	params ok
			params v. 4:	version ok	params ok
   109.1501 [history] successfully loaded module colorin from history
			blendop v. 13:	version ok	params ok
			params v. 7:	version ok	params ok
   109.1501 [history] successfully loaded module colorout from history
			blendop v. 13:	version ok	params ok
			params v. 5:	version ok	params ok
   109.1502 [history] successfully loaded module gamma from history
			blendop v. 13:	version ok	params ok
			params v. 1:	version ok	params ok
   109.1502 [history] successfully loaded module highlights from history
			blendop v. 13:	version ok	params ok
			params v. 4:	version ok	params ok
   109.1502 [history] successfully loaded module flip from history
			blendop v. 13:	version ok	params ok
			params v. 2:	version ok	params ok
   109.1502 [history] successfully loaded module bilat from history
			blendop v. 13:	version ok	params ok
			params v. 3:	version ok	params ok
   109.1502 [history] successfully loaded module cacorrectrgb from history
			blendop v. 13:	version ok	params ok
			params v. 1:	version ok	params ok
   109.1502 [history] successfully loaded module channelmixerrgb from history
			blendop v. 13:	version ok	params ok
			params v. 3:	version ok	params ok
   109.1502 [history] successfully loaded module colorbalancergb from history
			blendop v. 13:	version ok	params ok
			params v. 5:	version ok	params ok
   109.1502 [history] successfully loaded module denoiseprofile from history
			blendop v. 13:	version ok	params ok
			params v. 11:	version ok	params ok
   109.1502 [history] successfully loaded module diffuse from history
			blendop v. 13:	version ok	params ok
			params v. 2:	version ok	params ok
   109.1502 [history] successfully loaded module exposure from history
			blendop v. 13:	version ok	params ok
			params v. 6:	version ok	params ok
   109.1502 [history] successfully loaded module filmicrgb from history
			blendop v. 13:	version ok	params ok
			params v. 6:	version ok	params ok
   109.1502 [history] successfully loaded module lens from history
			blendop v. 13:	version ok	params ok
			params v. 10:	version ok	params ok
   109.1502 [history] successfully loaded module shadhi from history
			blendop v. 13:	version ok	params ok
			params v. 5:	version ok	params ok
   109.1502 [history] successfully loaded module sigmoid from history
			blendop v. 13:	version ok	params ok
			params v. 3:	version ok	params ok
   109.1502 [history] successfully loaded module temperature from history
			blendop v. 13:	version ok	params ok
			params v. 4:	version ok	params ok
   109.1502 [history] successfully loaded module ashift from history
			blendop v. 13:	version ok	params ok
			params v. 5:	version ok	params ok
   109.1502 [history] successfully loaded module crop from history
			blendop v. 13:	version ok	params ok
			params v. 1:	version ok	params ok
   109.1502 [history] successfully loaded module toneequal from history
			blendop v. 13:	version ok	params ok
			params v. 2:	version ok	params ok
   109.1502 [history] successfully loaded module bilat from history
			blendop v. 13:	version ok	params ok
			params v. 3:	version ok	params ok
   109.1502 [history] successfully loaded module bilat from history
			blendop v. 13:	version ok	params ok
			params v. 3:	version ok	params ok
   109.1503 [history] successfully loaded module atrous from history
			blendop v. 13:	version ok	params ok
			params v. 2:	version ok	params ok
   109.1552 synch all module defaults     [thumbnail]                             
   109.1869 synch all module history      [thumbnail]                             
   109.1870 dt_dev_pixelpipe_synch        [thumbnail]      rawprepare             enabled  order= 1, piece hash=3d0f0529334fc02f, 
   109.1870 dt_dev_pixelpipe_synch        [thumbnail]      demosaic               enabled  order= 8, piece hash=b328a70501948e52, 
   109.1870 dt_dev_pixelpipe_synch        [thumbnail]      colorin                enabled  order=32, piece hash=7563a39ceae1e96a, 
   109.1911 dt_dev_pixelpipe_synch        [thumbnail]      colorout               enabled  order=83, piece hash=8e5a0f73242a7524, 
   109.1912 dt_dev_pixelpipe_synch        [thumbnail]      gamma                  enabled  order=91, piece hash=1ae2f37bb34a05, 
   109.1912 dt_dev_pixelpipe_synch        [thumbnail]      highlights             enabled  order= 4, piece hash=26abe6488bb0049c, 
   109.1912 dt_dev_pixelpipe_synch        [thumbnail]      flip                   disabled order=17, piece hash=0, 
   109.1912 dt_dev_pixelpipe_synch        [thumbnail]      bilat                  enabled  order=67, piece hash=54923b020fc63196, 
   109.1912 dt_dev_pixelpipe_synch        [thumbnail]      cacorrectrgb           enabled  order=14, piece hash=43f8968d6b20ff8e, 
   109.1912 dt_dev_pixelpipe_synch        [thumbnail]      channelmixerrgb        enabled  order=33, piece hash=f088287cd1362e83, 
   109.1912 dt_dev_pixelpipe_synch        [thumbnail]      colorbalancergb        enabled  order=52, piece hash=9c9b5078735aa376, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      denoiseprofile         enabled  order= 9, piece hash=10036fa662da908e, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      diffuse                enabled  order=34, piece hash=6511ab83cf18f67e, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      exposure               enabled  order=24, piece hash=ee4f97460e9b04c9, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      filmicrgb              disabled order=58, piece hash=0, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      lens                   enabled  order=13, piece hash=a5350fa63a92991a, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      shadhi                 enabled  order=63, piece hash=d5588a4f0a1cf197, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      sigmoid                enabled  order=57, piece hash=622f98fb7bbb5cee, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      temperature            enabled  order= 3, piece hash=71ab59c8d9761237, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      ashift                 enabled  order=16, piece hash=1deb4d6454a588ed, 
   109.1919 dt_dev_pixelpipe_synch        [thumbnail]      crop                   enabled  order=28, piece hash=9352c353f96aa005, 
   109.1948 dt_dev_pixelpipe_synch        [thumbnail]      toneequal              enabled  order=27, piece hash=c670e8f85b445b73, 
   109.1948 dt_dev_pixelpipe_synch        [thumbnail]      bilat                  enabled  order=67, piece hash=54923b020fc63196, 
   109.1948 dt_dev_pixelpipe_synch        [thumbnail]      bilat.1                enabled  order=68, piece hash=a375bebacfc02357, 
   109.1948 dt_dev_pixelpipe_synch        [thumbnail]      atrous                 enabled  order=42, piece hash=e06c1b37ea6aafa5, 
   109.1948 synch all modules done        [thumbnail]                             defaults 0.0317s, history 0.0079s
   109.1948 [dt_imageio_export_with_flags]  modules: rawprepare temperature highlights demosaic denoiseprofile lens cacorrectrgb ashift exposure toneequal crop colorin channelmixerrgb diffuse atrous colorbalancergb sigmoid shadhi bilat bilat.1 colorout gamma
   109.1948 modify roi OUT                [thumbnail]      rawprepare             (   0/   0) 7872x5196 scale=1.0000 --> (   0/   0) 7728x5152 scale=1.0000 ID=54717
   109.1948 modify roi OUT                [thumbnail]      ashift                 (   0/   0) 7728x5152 scale=1.0000 --> (   0/   0) 7659x5049 scale=1.0000 ID=54717
   109.1949 modify roi OUT                [thumbnail]      crop                   (   0/   0) 7659x5049 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 ID=54717
   109.1949 [dt_imageio_export] thumbnail imgid 54717, 7659x4500 --> 7659x4500 (scale=1.0000, maxscale=1.0000). upscale=no, hq=no
   109.1949 pipe starting             CL0 [thumbnail]                             (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 ID=54717, nvidiacudanvidiageforcegtx1660
   109.1949 [dt_opencl_check_tuning] use 5326MB (headroom=ON, pinning=OFF) on device `NVIDIA CUDA NVIDIA GeForce GTX 1660' id=0
   109.1949 modify roi IN                 [thumbnail]      ashift                 (   0/   0) 7659x4500 scale=1.0000 --> (   6/   0) 7722x4606 scale=1.0000 ID=54717
   109.1956 modify roi IN                 [thumbnail]      lens                   (   6/   0) 7722x4606 scale=1.0000 --> (   4/   0) 7724x4610 scale=1.0000 ID=54717
   109.1956 modify roi IN                 [thumbnail]      demosaic               (   4/   0) 7724x4610 scale=1.0000 --> (   3/   0) 7724x4610 scale=1.0000 ID=54717
   109.1956 modify roi IN                 [thumbnail]      highlights             (   3/   0) 7724x4610 scale=1.0000 --> (   0/   0) 7728x5152 scale=1.0000 ID=54717
   109.1956 modify roi IN                 [thumbnail]      rawprepare             (   0/   0) 7728x5152 scale=1.0000 --> (   0/   0) 7872x5196 scale=1.0000 ID=54717
   109.1956 pipe data: full               [thumbnail]                             (   0/   0) 7872x5196 scale=1.0000 --> (   0/   0) 7872x5196 scale=1.0000 
   109.2101 process                   CL0 [thumbnail]      rawprepare             (   0/   0) 7872x5196 scale=1.0000 --> (   0/   0) 7728x5152 scale=1.0000   1 IOP_CS_RAW
   109.2128 process                   CL0 [thumbnail]      temperature            (   0/   0) 7728x5152 scale=1.0000 --> (   0/   0) 7728x5152 scale=1.0000   3 IOP_CS_RAW
   109.2171 process                   CL0 [thumbnail]      highlights             (   0/   0) 7728x5152 scale=1.0000 --> (   3/   0) 7724x4610 scale=1.0000   4 IOP_CS_RAW
   109.2242 opposed chroma            CL0 [thumbnail]      highlights             (   0/   0) 7728x5152 scale=1.0000 --> (   3/   0) 7724x4610 scale=1.0000 red: 0.0000, green: 0.0000, blue: 0.0000 for hash=cc345ad659c05151
   109.2273 process                   CL0 [thumbnail]      demosaic               (   3/   0) 7724x4610 scale=1.0000 --> (   4/   0) 7724x4610 scale=1.0000   8 IOP_CS_RAW -> IOP_CS_RGB
   109.6450 process                   CL0 [thumbnail]      denoiseprofile         (   4/   0) 7724x4610 scale=1.0000 --> (   4/   0) 7724x4610 scale=1.0000   9 IOP_CS_RGB
   110.7973 process                   CL0 [thumbnail]      lens                   (   4/   0) 7724x4610 scale=1.0000 --> (   6/   0) 7722x4606 scale=1.0000  13 IOP_CS_RGB
   111.0491 process                   CPU [thumbnail]      cacorrectrgb           (   6/   0) 7722x4606 scale=1.0000 --> (   6/   0) 7722x4606 scale=1.0000  14 IOP_CS_RGB
   112.2755 process                   CL0 [thumbnail]      ashift                 (   6/   0) 7722x4606 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  16 IOP_CS_RGB
   112.2933 process                   CL0 [thumbnail]      exposure               (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  24 IOP_CS_RGB
   112.3688 process                   CPU [thumbnail]      toneequal              (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  27 IOP_CS_RGB
   112.6534 process                   CL0 [thumbnail]      crop                   (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  28 IOP_CS_RGB
   112.6635 process                   CL0 [thumbnail]      colorin                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  32 IOP_CS_RGB -> IOP_CS_LAB
   112.6635 matrix conversion         CL0 [thumbnail]      colorin                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 `standard color matrix', : 1.000 1.000 1.000
   112.6791 transform colorspace      CL0 [thumbnail]      channelmixerrgb        (   0/   0) 7659x4500 scale=1.0000 IOP_CS_LAB -> IOP_CS_RGB `linear Rec2020 RGB'
   112.7014 process                   CL0 [thumbnail]      channelmixerrgb        (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  33 IOP_CS_RGB
   112.7174 process                   CL0 [thumbnail]      diffuse                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  34 IOP_CS_RGB
   113.8454 [dt_opencl_enqueue_kernel_2d] kernel 299 on device 0: CL_MEM_OBJECT_ALLOCATION_FAILURE
   115.2155 Error: process            CL0 [thumbnail]      diffuse                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 device=0 (nvidiacudanvidiageforcegtx1660), CL_MEM_OBJECT_ALLOCATION_FAILURE
   115.2155 pipe aborts               CL0 [thumbnail]      diffuse                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 couldn't run module on GPU, falling back to CPU
   115.2752 process                   CPU [thumbnail]      diffuse                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  34 IOP_CS_RGB
   126.2084 transform colorspace      CL0 [thumbnail]      atrous                 (   0/   0) 7659x4500 scale=1.0000 IOP_CS_RGB -> IOP_CS_LAB
   126.2575 process tiled             CL0 [thumbnail]      atrous                 (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  42 IOP_CS_LAB
   126.3205 [dt_opencl_enqueue_kernel_2d] kernel 125 on device 0: CL_MEM_OBJECT_ALLOCATION_FAILURE
   126.7243 [default_process_tiling_opencl_ptp] [thumbnail] couldn't run process_cl() for module 'atrous' in tiling mode: CL_MEM_OBJECT_ALLOCATION_FAILURE
   126.7243 Error: process_tiling     CL0 [thumbnail]      atrous                 (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 device=0 (nvidiacudanvidiageforcegtx1660), CL_MEM_OBJECT_ALLOCATION_FAILURE
   126.7243 pipe aborts               CL0 [thumbnail]      atrous                 (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 couldn't run module on GPU, falling back to CPU
   126.7243 process                   CPU [thumbnail]      atrous                 (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  42 IOP_CS_LAB
   128.8908 transform colorspace      CL0 [thumbnail]      colorbalancergb        (   0/   0) 7659x4500 scale=1.0000 IOP_CS_LAB -> IOP_CS_RGB `linear Rec2020 RGB'
   128.9100 process                   CL0 [thumbnail]      colorbalancergb        (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  52 IOP_CS_RGB
   128.9277 process                   CL0 [thumbnail]      sigmoid                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  57 IOP_CS_RGB
   128.9445 transform colorspace      CL0 [thumbnail]      shadhi                 (   0/   0) 7659x4500 scale=1.0000 IOP_CS_RGB -> IOP_CS_LAB `linear Rec2020 RGB'
   128.9676 process                   CL0 [thumbnail]      shadhi                 (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  63 IOP_CS_LAB
   129.0295 process                   CL0 [thumbnail]      bilat                  (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  67 IOP_CS_LAB
   129.0581 [dt_opencl_enqueue_kernel_2d] kernel 33 on device 0: CL_MEM_OBJECT_ALLOCATION_FAILURE
   129.0581 [local laplacian cl] error CL_MEM_OBJECT_ALLOCATION_FAILURE
   129.1769 Error: process            CL0 [thumbnail]      bilat                  (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 device=0 (nvidiacudanvidiageforcegtx1660), CL_MEM_OBJECT_ALLOCATION_FAILURE
   129.1769 pipe aborts               CL0 [thumbnail]      bilat                  (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 couldn't run module on GPU, falling back to CPU
   129.2357 process                   CPU [thumbnail]      bilat                  (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  67 IOP_CS_LAB
   130.1556 process                   CL0 [thumbnail]      bilat.1                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  68 IOP_CS_LAB
   130.2023 blend with form           CL0 [thumbnail]      bilat.1                (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 IOP_CS_LAB, BLEND_CS_LAB, no form
   130.2521 process                   CL0 [thumbnail]      colorout               (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  83 IOP_CS_LAB -> IOP_CS_RGB
   130.3365 process                   CPU [thumbnail]      gamma                  (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000  91 IOP_CS_RGB
   130.3800 cache report                  [thumbnail]                             2 lines (important=0, used=0, invalid=0). Using 1248MB, limit=0MB. Hits/run=0.00. Hits/test=0.000
   130.3800 pipe finished             CL0 [thumbnail]                             (   0/   0) 7659x4500 scale=1.0000 --> (   0/   0) 7659x4500 scale=1.0000 ID=54717

^C    

You have an opencl failures to allocate memory. Your nvidia drivers are older (550 instead of 565) and an older version of dt (4.8.1). I think you should first try updating the drivers and then dt 5.0.

OpenCL would cause a failure to print? I don’t see anything in the log about printing?

I don’t think -d common includes the printing flags. He might need to do a -d all.

With all the failures, I’m not even sure this file will export at all. Hence, let’s address what we know has problems, opencl.

I have moved from dt Ver: 4.8.1 to the current GIT and the problem has gone away.
It solved the problem for me but raises questions for somebody else.
Thanks for the support.