DT 5.4.0 fails to start on Linux if OpenCL is enabled

[FeralChild64]

Is there an existing issue for this?

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

Describe the bug

5.4.0 just displays a splashscreen and then crashes unless I disable OpenCL. 5.2.1 did work correctly.

Steps to reproduce

1. Start darktable

Expected behavior

No response

Logfile | Screenshot | Screencast

Startup log: darktable.txt.gz

GPU driver info: clinfo.txt.gz, glxinfo.txt.gz

Commit

No response

Where did you obtain darktable from?

Gentoo ebuild

darktable version

5.4.0

What OS are you using?

Linux

What is the version of your OS?

Gentoo, AMD64

Describe your system

Gentoo Linux, Wayland, Intel ARC A770,

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

Intel ARC A770, Mesa 25.3.2, OpenCL driver 25.31.034666 - see attachments for more details

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

No response

[jenshannoschwalm]

See your darktable text log around lines 185, could be the same problem as discussed in late part of #19958. I guess arch can also be affected.

[FeralChild64]

Sadly, reverting Mesa to 25.3.1 did not help in my case.

[jenshannoschwalm]

Yoa are aware it's about spirv*** ?

[FeralChild64]

But it’s a part of Mesa, right? Sorry, I really don’t know much about the whole GPU acceleration stack, I just want to edit my photos.

[jenshannoschwalm]

I just want to edit my photos.

I guessed so :-)

[FeralChild64]

OK, found the information in the Fedora ticket that it’s a part of the spirv-tools package.

Gentoo currently uses 1.4.328 as "stable". Tried to downgrade to the previous 1.4.321.0 (had to downgrade two more packages), but it didn’t help. The "unstable" package 1.4.335.0 does not work for me either.