Well, after those lines comes the same Python error that was described above. The plugin installer gives an error message "Plugin install failed". When I try to print a test page, the device manager claims that the plugin is not installed.
$ sudo /usr/lib/cups/backend/usb
DEBUG: list_devices
DEBUG: libusb_get_device_list=10
$sudo /usr/lib/cups/backend/hp
direct hp "Unknown" "HP Printer (HPLIP)"
Well, after those lines comes the same Python error that was described above. The plugin installer gives an error message "Plugin install failed". When I try to print a test page, the device manager claims that the plugin is not installed.
$ sudo /usr/lib/ cups/backend/ usb get_device_ list=10 cups/backend/ hp
DEBUG: list_devices
DEBUG: libusb_
$sudo /usr/lib/
direct hp "Unknown" "HP Printer (HPLIP)"