Here is output with USB>Parallel disconnected:
> sudo /usr/lib/cups/backend/usb DEBUG: list_devices_libusb DEBUG: usb_find_busses=7 DEBUG: usb_find_devices=12
log.txt attached
Here is output with USB>Parallel disconnected:
> sudo /usr/lib/ cups/backend/ usb
DEBUG: list_devices_libusb
DEBUG: usb_find_busses=7
DEBUG: usb_find_devices=12
log.txt attached