[sane-devel] Fuji Xerox M225 dw scanner visible via avahi, sane-find-scanner but not scanimage (Ubuntu 17.04)

[Jason Heeris]

Hi,

I have a Fuji Xerox DocuPrint M225 dw printer/scanner. It's connected 
to the same wifi network as my Ubuntu 17.04 system, as well as 
physically connected via USB.

I was unable to get Simple Scan to see it (I get the "No scanners 
detected" banner), so I did some more debugging. It's visible to avahi:

  ~ • avahi-browse -a
  + wlp3s0 IPv4 FX DocuPrint M225 dw Internet Printer local
  + wlp3s0 IPv4 FX DocuPrint M225 dw _scanner._tcp local
  + wlp3s0 IPv4 FX DocuPrint M225 dw PDL Printer local
  + wlp3s0 IPv4 FX DocuPrint M225 dw UNIX Printer local
  + wlp3s0 IPv4 FX DocuPrint M225 dw Web Site local

sane-find-scanner can see the USB but not the network interface:

  ~ • sudo sane-find-scanner
    # sane-find-scanner will now attempt to detect your scanner. If the
    # result is different from what you expected, first make sure your
    # scanner is powered up and properly connected to your computer.

    # No SCSI scanners found. If you expected something different, make 
sure that
    # you have loaded a kernel SCSI driver for your SCSI adapter.

  found USB scanner (vendor=0x138a, product=0x0017) at libusb:001:006
  found USB scanner (vendor=0x0550 [FX], product=0x0190 [DocuPrint]) at 
libusb:001:002
    # Your USB scanner was (probably) detected. It may or may not be 
supported by
    # SANE. Try scanimage -L and read the backend's manpage.

    # Not checking for parallel port scanners.

    # Most Scanners connected to the parallel port or other proprietary 
ports
    # can't be detected by this program.

...and scanimage -L can't see it at all:

  ~ • SANE_DEBUG_NET=128 scanimage -L
  [sanei_debug] Setting debug level of net to 128.
  [net] sane_init: authorize != null, version_code != null
  [net] sane_init: SANE net backend version 1.0.14 (AF-indep+IPv6) from 
sane-backends 1.0.27git
  [net] sane_init: Client has little endian byte order
  [net] sane_init: searching for config file
  [net] net_avahi_browse_callback: CACHE_EXHAUSTED
  [net] sane_init: done reading config
  [net] sane_init: evaluating environment variable SANE_NET_HOSTS
  [net] sane_init: evaluating environment variable SANE_NET_TIMEOUT
  [net] sane_init: done
  [net] sane_get_devices: local_only = 0
  [net] sane_get_devices: finished (0 devices)
  [net] net_avahi_browse_callback: ALL_FOR_NOW

  No scanners were identified. If you were expecting something 
different,
  check that the scanner is plugged in, turned on and detected by the
  sane-find-scanner tool (if appropriate). Please read the documentation
  which came with this software (README, FAQ, manpages).
  [net] sane_exit: exiting
  [net] net_avahi_cleanup: stopping thread
  [net] net_avahi_cleanup: done
  [net] sane_exit: finished.

I've tried installing the libsane*-dev packages and upgrading to the 
packages in the rolfbensch/sane-git PPA, rebooting each time. No change 
in detection. I've confirmed that net is present and uncommented in 
/etc/sane.d/dll.conf. Currently libsane is at version 
1.0.27+git20170729-zesty0 (from the rolfbensch PPA).

What else can I try?

Cheers,
Jason