Am Dienstag, 19. September 2017, 09:53:15 CEST schrieb Mark Heieis:
> Hi,
> 
> I just upgraded to F26 (fresh install) and using KDE but now having
> colour issues in that what I see in darktable is not what I'm seeing in
> colour managed image viewers on the same monitor.
> 
> I have 2 monitors: a DELL FP2007 used for most of my daily, non-colour,
> tasks and a Benq SW2700q used for naturally, image processing.  What I'm
> getting is the following:
> 
> --------------------------
> darktable-cmstest version darktable-2.2.5-2.fc26
> 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 2 has no mode or no output, skipping
> CRTC for screen 0 CRTC 3 has no mode or no output, skipping
> CRTC for screen 0 CRTC 4 has no mode or no output, skipping
> CRTC for screen 0 CRTC 5 has no mode or no output, skipping

You can ignore those.

> DVI-D-1 the X atom and colord returned different profiles
>         X atom: _ICC_PROFILE (766048 bytes)
>                 description: DELL 2007 #1 2017-01-26 12-28 2.2 F-S
> XYZLUT+MTX
>         colord: "/var/lib/colord/icc/SW2700 #2 2017-09-18 23-50 2.2 F-S
> XYZLUT+MTX.icc"
>                 description: SW2700 #2 2017-09-18 23-50 2.2 F-S XYZLUT+MTX

Those two seem to differ (different dates mentioned in the description).

> HDMI-2  the X atom and colord returned different profiles
>         X atom: _ICC_PROFILE_1 (766048 bytes)
>                 description: DELL 2007 #1 2017-01-25 15-47 2.2 F-S
> XYZLUT+MTX
>         colord: "[home_dir]/.local/share/icc/DELL 2007 #1 2017-01-26
> 12-28 2.2 F-S XYZLUT+MTX.icc"
>                 description: DELL 2007 #1 2017-01-26 12-28 2.2 F-S
> XYZLUT+MTX

Again, the two differ as can be seen from the dates in the description.

> Better check your system setup
>  - some monitors reported different profiles
> You may experience inconsistent color rendition between color managed
> applications
> --------------------
> 
> What I'm seeing is DVI-D-1 (primary is Benq)  has conflicting profiles.
> I'm thinking the CM image viewers are using xatom. I've configured icc
> profiles "correctly"  in the "Color Corrections" module but I'm confused
> as to where Xatom is being configured or why it's not picking up the
> correct profile. As you can see colord has the correct profiles. I don't
> care about the Dell, it's the Beng profiles that seems to be problem.

Technically speaking both monitors have incoherent profile settings.

Do you have dispcalgui installed? That tool tries to set the xatom profiles, 
too, and it can get in the way when also setting profiles by other means. If 
the colrod profile is the correct one for you then you can tell darktable to 
only honour that profile source in the preferences. Of course that won't help 
with image viewers which don't know anything about colord.

> Also, I don't know what the CRTC messages are implying.

Nothing to care about.

> Any thoughts or guidance?

At first I'd try to find out what program is setting the wrong profile.
 
> TIA

Tobias

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