Comment 8 for bug 422930

Can you update again (cups 1.4.0-5 or newer) and check again?

If it still adds an "hp:..." queue to your existing "usb:..." queue, do the following (post output here):

1. Remove "usblp" kernel module

lsmod | grep usblp
sudo rmmod usblp

If the module was still there, remove your "hp:..."-based print queue and re-plug the printer again. Does it stop creating the new queue now? Does the module stay unloaded? Or does it get loaded again?

2. Check what the new USB backend does

If you still have the problem, do

lpinfo -v
/usr/lib/cups/backend/usb
sudo /usr/lib/cups/backend/usb
sudo su lp -c /usr/lib/cups/backend/usb
ls -l /usr/lib/cups/backend/usb
ls -l /dev/bus/usb/*/*
lsusb