Let’s see if I will manage to make the problem understandable:
Ubuntu Studio 17.10.
Printer: 6-color Epson XP-960 ink jet.
Driver: Epson’s ESC/P-R 1.6.19.
Gutenprint does not offer a suitable driver.
Gimp 2.9.9 -> Print does not work: “Job canceled as printer”.
CUPS add printer/print test page: works just fine.
darktable (yesterday’s git version)/print: works beautifully.
So, why on earth is The Gimp behaving in this way?
What might I have overlooked?
Claes in Lund, Sweden