OpenCL

[louinux]

$ darktable-cmstest
darktable-cmstest version 3.4.0
this executable was built with colord support enabled
darktable itself was built with colord support enabled

primary CRTC is at CRTC 0
CRTC for screen 0 CRTC 1 has no mode or no output, skipping
CRTC for screen 0 CRTC 2 has no mode or no output, skipping
CRTC for screen 0 CRTC 3 has no mode or no output, skipping

DisplayPort-0  the X atom and colord returned the same profile
        X atom: _ICC_PROFILE (0 bytes)
                description: (none)
        colord: "(none)"
                description: (file not found)

Better check your system setup
- some monitors lacked a profile
You may experience inconsistent color rendition between color managed applications

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A la lecture du lien je vais pas trop me casser la tête pour OpenCL, suis pas un grand photographe et encore moins un spécialiste du développement, tellement je galère avec ces logiciels....