Strange artefacts problem in DT

Software darktable
1

Strange Artefacts

The first image is an export after all the required modules are applied. The second image is an export after the crop module is also applied over and above the earlier modules. It only happens with this image which means that my preference settings are not the source of the problem. Also, the artefacts are not visible in Lighttable nor in Darkroom, only in the exported jpg files.

IMG_9383_01
IMG_9383_011080×720 631 KB

IMG_9383
IMG_93831080×720 733 KB

I think I am on 4.2.0 for Windows but I don’t know how to confirm this.
IMG_9383.CR3.xmp (16.3 KB)
IMG_9383.CR3 (15.0 MB)

I have also uploaded the cr3 file and the xmp file.

Any ideas? Thank you for your patient reading and response.

2

Namaste, Prakash (or perhaps Namaskar?),

Sorry. I cannot repeat.
I have tested on Windows 11 and darktable 4.2,
the jpg comes out just fine.

Have fun!
Claes in Lund, Sweden

3

Click the name / logo in the upper left corner. That will display an About dialog.

image

image

4

@Claes , Namaste and Namakar, both, are fine. I am pleasantly surprised at the ease with which you said it though :slightly_smiling_face:

Thank you for trying it out but now I don’t know what is wrong with my setup. I tried out my issue multiple times - a few days back when I posted on FB, then earlier today when I posted on this site, and right now after your reply. At least my setup is consistently producing the problem.

Anyway, as I said it happens only for this particular image. Thank you once again.

@lphilpot thank you for your response, too! And I have to say it doesn’t work on my machine. It used to, on the older versions but not now. Whether I left-click or right-click on the logo on top right corner I get the standard Windows dialogue for Move-Restore-Close. There is something really odd about the installation that I have managed to create. Anyway, thank you.

5

I was referring to the larger darktable logo on the app screen, not the system icon on the title bar.

1 Like
6

If the logo is hidden you need to click the white arrow centered on the upper edge of darktable.

triangle

1 Like
7

I also can not reproduce the problem with 4.4.0 on Windows 10, the exported onions look completely usable.

8

It is probably worth upgrading to version 4.4 which was released a few days ago and hopefully the problem will just go away. If it persists that might be informative. install | darktable

9

I’m facing the same strange behavior with DNG file.
Lighttable view:
Capture d’écran fichier dng

Darkroom example:
Capture d’écran dng-2

OpenCL was deactivated.
With OpenCL activated I got the right image in Darkroom but if you look at the fimstrip there is a problem:
Capture d’écran dng-3

10

A description of your machine would be helpful. OS, memory, graphics card + driver version + memory on the card.

You may try to remove the compiled OpenCL kernels (under ~/.cache/darktable on Linux, or INetCache(? Sorry, not at my computer) on Windows).

1 Like
11

Ah! Got it! Thank you very much. I can now confirm that I am on 4.2.0 on Windows 11. Thank you once again.

12

Here is the requested information:

13

(Details have been posted in a private message, by mistake.)

image
image1058×172 15.1 KB

I’m not familiar with Windows drivers, but on Linux, it’s a 3-digit number like 525. The search at Official Drivers | NVIDIA also reports such a number for Windows:
image

results in:

image

Edit: on a forum, I found this, so it’s probably the same.
image

14

What do you get with the command-line switch
-d common
That should log the info most useful for troubleshooting to
C:\Users\your-user\AppData\Local\Microsoft\Windows\INetCache\darktable\darktable-log.txt.
You may also try deleting all cached thumbnails, maybe that would solve the filmstrip issue?
C:\Users\your-user\AppData\Local\Microsoft\Windows\INetCache\darktable\mipmaps-some-ugly-code-here.d.

15

Here are the files located in INetCache:

image
image849×297 7.23 KB

I’ll send you darktable-log.txt directly by email.
In short after removing files I didn’t see any difference in Lighttable and Darkroom: there is no more trouble with NEF files.
FYI I created DNG files from the NEF files using DxO DeepPRIME with the aim of testing DxO demosaic software. I’m no longer using it.
DNG files can be omited

16

Kofa, thank you a lot for your help.

Enclosed is darktable-log file.

darktable-log.txt (7.47 KB)

17

Are you sure you got that with darktable -d common?

I’m asking because yours looks like this (similar lines omitted):

========================================
version: darktable 4.4.0
start: 2023:06:26 18:24:17

    38.1282 wait time 0.106857s
....
   264.1279 wait time 0.106228s
   346.2268 [dt_imageio_large_thumbnail GM] thumbnail not found?
....
   347.5073 [dt_imageio_large_thumbnail GM] thumbnail not found?

end:   2023:06:26 18:24:17
========================================

Mine:

     0.0001 application_directory: /home/kofa/darktable-master/bin
     0.0001 darktable.datadir: /home/kofa/darktable-master/share/darktable
     0.0001 darktable.plugindir: /home/kofa/darktable-master/lib/darktable
     0.0001 darktable.localedir: /home/kofa/darktable-master/share/locale
     0.0001 darktable.configdir: /home/kofa/.config/darktable
     0.0001 darktable.cachedir: /home/kofa/.cache/darktable
     0.0002 darktable.sharedir: /home/kofa/darktable-master/share
     0.0002 darktable.tmpdir: /tmp
     0.0002 new_xdg_data_dirs: /home/kofa/darktable-master/share:/usr/share/plasma:/usr/share/gnome:/home/kofa/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share:/var/lib/snapd/desktop
     ....
     0.9848 [dt_worker_threads] using 4 worker threads
     0.9853 [dt_get_sysresource_level] switched to 2 as `large'
     0.9853   total mem:       64191MB
     0.9853   mipmap cache:    8023MB
     0.9853   available mem:   43880MB
     0.9853   singlebuff:      4011MB
     0.9853   OpenCL tune mem: OFF
     0.9853   OpenCL pinned:   OFF
[opencl_init] opencl related configuration options:
[opencl_init] opencl: ON
[opencl_init] opencl_scheduling_profile: 'default'
[opencl_init] opencl_library: 'default path'
[opencl_init] opencl_device_priority: '+0/+0/+0/+0/+0'
[opencl_init] opencl_mandatory_timeout: 20000
[opencl_init] opencl library 'libOpenCL' found on your system and loaded
[opencl_init] found 1 platform
[opencl_init] found 1 device

[dt_opencl_device_init]
   DEVICE:                   0: 'NVIDIA GeForce GTX 1060 6GB'
   PLATFORM NAME & VENDOR:   NVIDIA CUDA, NVIDIA Corporation
   CANONICAL NAME:           nvidiacudanvidiageforcegtx10606gb
   DRIVER VERSION:           525.116.04
   DEVICE VERSION:           OpenCL 3.0 CUDA, SM_20 SUPPORT
   DEVICE_TYPE:              GPU
   GLOBAL MEM SIZE:          6072 MB
   ...
   KERNEL LOADING TIME:       0.0159 sec
[opencl_init] OpenCL successfully initialized. Internal numbers and names of available devices:
[opencl_init]           0       'NVIDIA CUDA NVIDIA GeForce GTX 1060 6GB'
[opencl_init] FINALLY: opencl is AVAILABLE and ENABLED.
[dt_opencl_update_priorities] these are your device priorities:
...
18

Sorry,

I sent to you the log file I found on darktable INet cache . I’ll come back to you later on, tomorrow, I hope.

19

The path is correct, but did you start darktable with the -d common argument?

20

Kofa (or István ?)

I never used darktable command arguments with Windows. I dig a little bit the online documentation and understood I should use luarc for it. I have to learn about it before coming back to you.