Black centre screen

Hi I’m new to darktable and trying to edit.

I seem to be able to import images and I can see them in light table. But when I switch to darkroom there is nothing. If I make a change it will briefly flicker with an image and disappear.

Hope someone can assist.

Using Windows 11

Welcome to the forum. Such problems usually happen when darktable tries to use OpenCL (GPU) acceleration, and there is a bug in the driver.
Do you have a GPU (even if embedded in the CPU)? If yes, what brand? What driver? How much GPU memory/VRAM?
You can check whether darktable tried to use the GPU in preferences → processing. If the activate OpenCL support option is not greyed out, you have a GPU that darktable thinks it can use. If the option is ticked, support is turned on. If that is the case, try turning it off and see if it helps.

It will make some operations very slow, though, so it’s only recommended as a temporary workaround or a step in the investigation.

If you see something like this, darktable did not find a usable GPU, and we have to look somewhere else:
image

1 Like

Turned that off and it seemed to work.

Thanks for that.

Cheers

WD19

OK, so it’s an OpenCL issue. However, some modules will become almost unusably slow (diffuse or sharpen is an example, and it’s a good module to have).
If I were you, I’d try to troubleshoot the GPU driver:

Its in my laptop

Intel(R) Iris(R) Xe Graphics
Driver version: 31.0.101.4091
GPU Memory 0.5/3.9 GB

There have been problems with intel devices; in fact, they were blacklisted for a while.
The latest driver seems to be 31.0.101.4314. It may be worth a try.

What version of darktable?