https://bugs.kde.org/show_bug.cgi?id=515941
--- Comment #12 from [email protected] --- I think I've found the problem (after spending many hours investigating it). By default, the CUPS configuration for the printer is set to COLOR MODEL = CMYK. When I print from Firefox, I see in the print dialog (system dialog) that this setting is supposed to be used. This is confirmed in the CUPS debug log, where you'll find: cupsColorSpace = 6 (CUPS_CSPACE_CMYK). When I do the same thing in Okular, the print dialog there also indicates that the CMYK color model should be used. However, in the CUPS debug log, it now shows cupsColorSpace = 1 (CUPS_CSPACE_RGB)! When I set the printer’s setting to COLOR MODEL = GRAYSCALE in CUPS as a test, I can at least change the setting in the print dialogs: Firefox displays Grayscale as the color model. If I change it to CMYK, the expected setting is also reflected in CUPS. Okular also displays Grayscale as the color model. Here, too, I can change it to CMYK. And here, too, the setting is correctly reflected in CUPS. Summary: When printing with Okular, the Color Model setting (or at least that setting) is not applied correctly. -- You are receiving this mail because: You are watching all bug changes.
