Hello. I have the same bug.
Here are some data : About the printer : Epson Stylus DX7450 - CUPS+Gutenprint v5.2.8-pre1 (color, 2-sided printing) ipp://livebox:631/ipp About the print job states : Processing page 1... Printing page 1, 17% no profiles specified in PPD Print file was not accepted. job-printer-state-reasons : [u'cups-ipp-conformance-failure-report', u'cups-ipp-missing-validate-job'] Before I updgrade from Ubuntu 11.10 to 12.04, a useless password was asked to print : I could enter anything, printing worked. Now, no password is required but printing does not work. ** Changed in: cups (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945028 Title: network printer : cups-ipp-missing-validate-job To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/945028/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs