Vertical lines/bars appearing on photos in darkroom tab

[jeremyschuh]

Is there an existing issue for this?

• I checked and did not find my issue in the already reported ones

Describe the bug

Seeing vertical lines on landscape Sony RAW files when I select them from the lighttable tab to open them in the darkroom tab. These bars go away or return when zooming or using the framing module and other tools. Haven't had this issue with Fuji RAW files yet.

Steps to reproduce

1. Go to lighttable tab
2. Double click on a photo
3. Zoom in or out on a photo or toggle the framing module

Expected behavior

No response

Logfile | Screenshot | Screencast

Commit

No response

Where did you obtain darktable from?

distro packaging

darktable version

5.0.0-1

What OS are you using?

Linux

What is the version of your OS?

Manjaro 25

Describe your system

gtk 4.16.12, x11

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

Advanced Micro Devices, Inc. [AMD/ATI] Navi 23 [Radeon RX 6600/6600 XT/6600M] (rev c7), amdgpu

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

No response

[kofa73]

Can the problem be fixed by disabling OpenCL?
Is it reproducible with the recently released 5.0.1?

[da-phil]

Sounds like a known issue with AMD GPUs which are not configured to use pinned memory in your darktable settings file.
Please have a look at the following post which explains how to enabled pinned memory for your AMD opencl device for darktable: #16984 (comment)

If that fixes also your issue, please comment in the following issue that this setting fixed your problems: #17983
If there are enough confirmations for this fix, we'll activate pinned memory by default.

[jeremyschuh]

Can the problem be fixed by disabling OpenCL? Is it reproducible with the recently released 5.0.1?

It was fixed with disabling OpenCL. Haven't seen it since! Thank you so much! I can try 5.0.1 in the next few days and get back to you.

[kofa73]

Suggesting to disable OpenCL wasn't a solution attempt, but a diagnostic step on my side: by doing so, you lose a lot of performance. I don't use AMD, so don't know the details, but people seem to use the 'rocm' driver for AMD. For example: https://discuss.pixls.us/t/video-card-for-a-new-build-in-2024/46769/18

[da-phil]

Yes, for OpenCL it's highly recommended to use ROCm on AMD GPUs, I'm even using it for my laptop iGPU.
I only installed the OpenCL engine (ROCr) by utilizing the amdgpu-install script like that:
amdgpu-install --usecase=graphics,multimedia,opencl --opencl=rocr --no-dkms