Updating: The fact one printer works and the other doesn't is irrellevant, as these printers use different backends (hp and hal).
The problematic printer is the one using the HAL backend. After some googling I've found the suggestion of doing a "chmod 700 /usr/lib/cups/backend/hal" (and the same to the "usb" backend), and restart cups. Doing so clears the "Permission denied" message, but printer still doesn't work: it eats any document send to it without printing nothing. At least for me. -- hal permission problems preventing jobs to be printed https://bugs.launchpad.net/bugs/278069 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs