most of this will be identical to my last comment, but in the interests of completeness I've duplicated the tests with the full debug logs
$ lpstat -v device for ML-4500: usb://Samsung/ML-4500 $ sudo /usr/lib/cups/backend/usb DEBUG: list_devices DEBUG: libusb_get_device_list=13 DEBUG: Printer found with device ID: MFG:Samsung;CMD:GDI;MDL:ML-4500;CLS:PRINTER;MODE:GDI;STATUS:IDLE; Device URI: usb://Samsung/ML-4500 direct usb://Samsung/ML-4500 "Samsung ML-4500" "Samsung ML-4500" "MFG:Samsung;CMD:GDI;MDL:ML-4500;CLS:PRINTER;MODE:GDI;STATUS:IDLE;" "" $ sudo /usr/lib/cups/backend/usb DEBUG: list_devices DEBUG: libusb_get_device_list=13 DEBUG: Printer found with device ID: MFG:Samsung;CMD:GDI;MDL:ML-4500;CLS:PRINTER;MODE:GDI;STATUS:IDLE; Device URI: usb://Samsung/ML-4500 direct usb://Samsung/ML-4500 "Samsung ML-4500" "Samsung ML-4500" "MFG:Samsung;CMD:GDI;MDL:ML-4500;CLS:PRINTER;MODE:GDI;STATUS:IDLE;" "" [error_log.1] power cycle $ sudo /usr/lib/cups/backend/usb DEBUG: list_devices DEBUG: libusb_get_device_list=13 DEBUG: Printer found with device ID: MFG:Samsung;CMD:GDI;MDL:ML-4500;CLS:PRINTER;MODE:GDI;STATUS:IDLE; Device URI: usb://Samsung/ML-4500 direct usb://Samsung/ML-4500 "Samsung ML-4500" "Samsung ML-4500" "MFG:Samsung;CMD:GDI;MDL:ML-4500;CLS:PRINTER;MODE:GDI;STATUS:IDLE;" "" print job #12 results in no pages printed $ sudo /usr/lib/cups/backend/usb DEBUG: list_devices DEBUG: libusb_get_device_list=13 DEBUG: Printer found with device ID: Device URI: usb://Unknown/Printer direct usb://Unknown/Printer "Unknown" "Unknown" "" "" DEBUG: Failed to set configuration 1 for 067b:2305 [error_log.2] ** Attachment added: "error_log.1" https://bugs.launchpad.net/ubuntu/+source/cups/+bug/987485/+attachment/3191422/+files/error_log.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/987485 Title: Can only print once with USB to parallel adapter and HP 4L To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/987485/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
