If the workaround presented in my previous comment does not work for you, try the following:
Get cups_1.3.9-16ubuntu1~ppa1 from my PPA. It contains a USB backend which is based on libusb, taken from CUPS 1.4.x. Note that the package is only for testing and therefore not perfect. You have to do the following manual steps: 1. The AppArmor configuration is not prepared for the access via libusb, deactivate AppArmor for CUPS with sudo aa-complain cupsd 2. The usblp kernel module blocks the access for the new USB backend. You need to deactivate it. Add a line "blacklist usblp" to the /etc/modprobe.d/blacklist.conf file and run sudo rmmod usblp Now the module is unloaded and will not get reloaded if you plug in or power-cycle a USB printer or if you reboot. With all this done, try setting up your printer with the "usb" backend (not HPLIP or HAL, nor my first workaround) and see whether it prints or not. This is the last mean. If this does not work, the only cause of the bug can be the kernel. We tried so many backends now. -- Printer (HWModel Name) May Not Be Connected https://bugs.launchpad.net/bugs/348316 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