Darktable Histogram blank empty nothing

I had this issue before on my older PC. I managed to resolve it i think with CUDA Toolkit.
My setup:
AMD Ryzen 7 7700X 8-Core Processor
AMD Radeon™ Graphics
NVIDIA GeForce RTX 5060 Ti
I am going bananas trying to resolve this new PC
I have not installed the CUDA Toolkit.
I have tried multiple different things including disabling OpenCL>
Save me gang

I think you should provide more details. Eg what version of dt, what os, a log, etc.

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What OS? what version of darktable?

I’m not familiar with running both an integrated GPU and an external GPU in a desktop. In the BIOS, disable the integrated GPU so your system is only using the NVidia. Make sure you actually installed Nvidia’s GPU drivers.

No you don’t need to install anything else. darktable is compiled to use OpenCL on systems that support it.

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Win11; DT 5.4.0 (but even older versions were not working)

If you start with a temporary configuration directory, does it stay the same?

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yes. I am downloading older version 4.8.1. see how that goes

I’m not familiar with running both an integrated GPU and an external GPU in a desktop.
In the BIOS, disable the integrated GPU so your system is only using the NVidia.
Done.

Make sure you actually installed Nvidia’s GPU drivers.
I think so, yes.

4.8.1. Installed and still not working

Provide a log. Installing older versions is not a likely solution.

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Fixed. I should have done that first time, but I am a bit of an IT pleb.
Windows display color-management mismatch.
It s not any of these: CUDA, NVIDIA, Darktable.
Problem: Windows default display profile: Display-P3 (Dell factory ICC)
Solution: Set the display profile to: sRGB IEC61966-2.1
Yoah, I have had this issue for 6 months. Following the gazillion ideas online, and all i needed was the log files. Well, its now done. YAY


as a thank you to the helpful directives, I share the cute baby impala I am doing first

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And if you keep the Windows default profile or the profile you created with a calibration software/colorimeter and set the Display Profile in dt to ‘system display profile’ (e.g. in Lightable), it should work, shouldn’t it?
At least it does on my system.