HP 5550 printer on USB does not print

[pierre-m]

I just removed my Canon S750 from USB (using the wizard) and replaced it by a HP 5550, which is said to work "perfectly" under Linux.
I used the wizard to configure it and every thing seemed ok, but when I click the "test printer" button nothing is output, despite the message saying that a page was sent to the printer.
Note that the HP 5550 works under Windows, and that the Canon worked under Knoppix (notwell but still worked).

[pierre-m]

Let me do the questions and answers, it may help another beginner like me :
When you configure that printer with the wizard, you have no driver choice : the system chooses automatically foomatic + hpijs.
But .... ijs is not included in the knoppix distribution.
Therefore you have to download it from http://hpinkjet.sourceforge.net, and then follow the installation procedure.