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OpenPrinting / ipp-usb

ipp-usb -- HTTP reverse proxy, backed by IPP-over-USB connection to device
BSD 2-Clause "Simplified" License
129 stars 11 forks source link

Samsung ProXpress M4020ND #40

Closed mikhailnov closed 2 years ago

mikhailnov commented 2 years ago

Hello

I have a printer Samsung ProXpress M4020ND under hands at the moment (and I will probably have access to it again later). It works via IPP via network.

But ipp-usb (from current git master) does not work.

Firstly, udev rule does not trigger ipp-usb-service. It work If change ENV{ID_USB_INTERFACES}=="*:070104:*" to ENV{ID_USB_INTERFACES}=="*:0701??:*", then it does trigger it, but it does not find any devices and exits.

user@mn-rosa-pc /mnt/dev/sources/wpa_supplicant $ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
Bus 001 Device 006: ID 046d:c34b Logitech, Inc. USB Keyboard
Bus 001 Device 004: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 010: ID 04e8:331d Samsung Electronics Co., Ltd M332x 382x 402x Series
Bus 001 Device 002: ID 1462:b926 Micro Star International MYSTIC LIGHT 
Bus 001 Device 005: ID 8087:0032 Intel Corp. AX210 Bluetooth
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
user@mn-rosa-pc /mnt/dev/sources/wpa_supplicant $ sudo ipp-usb
  ===============================
  ipp-usb started in "debug" mode, pid=26939

...and nothing happens. If I plug and play any USB device it becomes printed here.

More logs here: https://linux-hardware.org/?probe=0600816ba9

strace of running ipp-usb and replugging the printer into USB st.log

The problem is that it is not clear how to debug it...

zdohnal commented 2 years ago

Hi Mikhail,

I'm not an ipp-usb project owner, but I check the issues, so I might be of some help.

I have a printer Samsung ProXpress M4020ND under hands at the moment (and I will probably have access to it again later). It works via IPP via network.

But ipp-usb (from current git master) does not work.

ipp-usb depends on IPP 2.0+ and IPP-over-USB support so the fact the printer works via IPP via network doesn't necessarily mean it works with ipp-usb.

In case of IPP 2.0+ via network the best test is to create IPP Everywhere queue:

$ lpadmin -p <name> -v ipp://<IP/hostname>/ipp/print -m everywhere -E

If this works, the printer supports IPP Everywhere, which has IPP 2.0+ as an requirement. If it doesn't work, ipp-usb won't work either.

Firstly, udev rule does not trigger ipp-usb-service. It work If change ENV{ID_USB_INTERFACES}=="*:070104:*" to ENV{ID_USB_INTERFACES}=="*:0701??:*", then it does trigger it, but it does not find any devices and exits.

This change proves your printer doesn't support IPP-over-USB, so it cannot be supported by ipp-usb. Devices with IPP-over-USB must support interface protocol 4. So unfortunately it looks like your printer won't work with ipp-usb.

mikhailnov commented 2 years ago

@zdohnal Thanks a lot!

alexpevzner commented 2 years ago

Hi @mikhailnov,

looking to the lsusb output, I guess your device doesn't support IPP over USB.

IPP over USB is:

      bInterfaceClass         7 Printer
      bInterfaceSubClass      1 Printer
      bInterfaceProtocol      4

Your device doesn't offer such an interface. This is why ipp-usb is not started for your device by udev rule, and this is why ipp-usb, being started manually or via modified udev rule still doesn't see your device.

Even if your device supports IPP over network and printing over USB, it doesn't automatically imply IPP over USB support.

mikhailnov commented 2 years ago

Thanks! I think it should be documented in README.