I resolved with the advice of Pascal De Vuyst (pascal-devuyst). I have an HP Deskjet 840C
I selected "HP Deskjet 840c hpijs, 3.11.1 [en]" instead of "HP Deskjet 840c, hpcups 3.11.1 [en](reccomend) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/786048 Title: Cannot print using grayscale To manage notifications about this bug go to: https://bugs.launchpad.net/hplip/+bug/786048/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
