The problem of the USB printer not being detected is probably the one described in bug 82187:
https://launchpad.net/ubuntu/+source/udev/+bug/82187 There you find also a workaround. Please try and tell whether it solves your problem. The messages in your second posting have nothing to do with your initial problem. This is a bug in the current Gutenprint package which will be fixed soon. ** Changed in: cupsys (Ubuntu) Status: Unconfirmed => Needs Info -- feisty gnome-cups-manager doesn't find usb printer https://launchpad.net/bugs/83933 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
