Am Donnerstag, 21. November 2013, 00:16:06 schrieb Marie-Noëlle Augendre:
> I'm now pretty sure darktable doesn't use the same ICC profile as other
> softwares: it is actually visible on this page
> https://www.dropbox.com/s/1c3wlvhi98teo3s/ICC_comparison.jpg with darktable
> (bottom left) having much more saturated colors than Digikam (top left),
> GIMP (top right) and Firefox browser (bottom right) displaying the same
> picture in a web gallery.
> 
> I launched darktable several times with the option -d control in order to
> check the ICC profile being actually used, but the message is always:
> [color profile] we got a new screen profile from the _ICC_PROFILE (size:
> 21560)
> and I don't understand what it means.

There are two means for darktable to get a display profile (besides setting it 
manually in colorout):

- from the _ICC_PROFILE xatom (some internal data of the X server)
- from colord

In case of colord the control message will tell you the filename it loaded, 
however the xatom only has the binary data so all we can tell about it is its 
size in bytes. What you could do is check (with ls -l) if the profile you have 
set in your system is 21560 bytes big. If that is not the case then some other 
profile was used. If it is the case however then either you are not using the 
system default profile in the output color module, or you have some modules 
activated that alter the image. Of course there is also the slight chance that 
you have stumbled over a bug, but that's least likely.

> I'm running 1.2.3 version on a Fedora 19 distro with a Cinnamon desktop,
> and from what I see in the system preferences, the ICC profiles of both
> screens (laptop + 23") are correctly assigned.

Having two screens it could also be that the system assigned the wrong profile 
to the according xatom. But all of this is just speculation. Please compare 
the file size of the display profile with the size reported by darktable and 
report back.

> Thanks for any hint in order to fix this problem.
> Marie-Noëlle

Tobias

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