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I'm trying to set up a HP MFP M225Dn multifunction printer/scanner on a local network with 3 Linux PCs (one with 16.04, one with 14.04, one with Mint 17.3 - based on 14.04).

Printing was o.k. on 16.04, no need to install anything, while I needed to update HPLIP on 14.04 and Mint to get them print, so now PRINTING IS OK for all PCs.

Scanner has been a little harder to install on 16.04, while I haven't been able to make it work on both 14.04 and Mint at all.

On both issued PCs, running xsane I got no devices available, the same using sudo xsane.

I think it can be a sane-backend problem. None of these "recent" HP MFP printers appear in the supported list, see http://www.sane-project.org, despite it works on 16.04.

I'm looking for suggestions. What can I look for on 16.04 that can help me making it work on 14.04 too?

EDIT

As suggested I'm adding some outputs:

1. 
   $ sane-config --version returns 1.0.23
   


2. 
   $ xsane (v. 0.998) outputs a window saying "no devices available"


3. $ scanimage
scanimage: no SANE devices found


4. 
   

   $ 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.
   
   
   
   # No USB scanners found. If you expected something different, make sure that
   
   # you have loaded a kernel driver for your USB host controller and have setup
   
   # the USB system correctly. See man sane-usb for details.
   
   
   
   # Not checking for parallel port scanners.
   
   
   
   # Most Scanners connected to the parallel port or other proprietary ports
   
   # can't be detected by this program.
   
   

   
   

BTW: of course the scanner is turned on.

Thank you in advance!

I provide you with a generic answer, short of being able to thoroughly troubleshoot yr issue. Being generic the answer is long.

Assuming that:

• yr networked scanner is switched on.


• yr device is connected to:
  a) the network as a stand alone LAN device (direct LAN-setup).
  b) a computer and shared over the network: that computer is referred to as the LAN-server. All other networked computers are called LAN-clients. Setting this up differs from what follows. That case is not covered here.


• packages hplip, sane-utils, libsane as well as libsane-extras are correctly installed. The latter requires the universe repo to be enabled.


• you have added user saned to groups lp and scanner with:

In terminal

$ sudo adduser saned {scanner,lp}

In reality only one of those two groups (lp, scanner) is needed, but you can safely add saned to both. It won't hurt. HP scanners of type MFP tend to be added to lp, others to scanner. This is required when scanning from a USB connected all-in-one shared on the network, i.e. through a scan-server. I have not verified that it is required for stand-alone LAN scanners. Again if not, it won't hurt.

• you have edited /etc/sane.d/dll.conf, to try to enable the correct scan-driver for yr device. Try looking for "The following backends are not part of the SANE distribution ..." in that configuration file. Below that you'll find commented lines corresponding to scanners that are either not directly supported (untested) or partially supported. Uncomment lines as you deem appropriate, save file.

From the Ubuntu community's Scanning-HowTo:

• Ensure the device can be pinged.
  
  


• 
  

  Run the hp-setup wizard which installs printer, scanner, HpAllInOne and any other features.
  
  In terminal

  
  
  

  $ sudo apt-get install python-qt4 # required only for Ubuntu 14.04
  $ sudo hp-setup

  
  

For Connection Type choose "Network/Ethernet..."

If the device is not detected, click "Show advanced options", tick "Manual discovery" and supply the scanner's IP address.

Check the scanner is now recognized:

$ scanimage -L

Alas, if yr scanning device is still not detected:

• Determine the URI of the printer

Inside a terminal window, execute:

 $ hp-makeuri IP-ADDRESS

where "IP-ADDRESS" should be replaced with the IP address of your printer. This will show the CUPS (printing) and SANE (scanning) URIs for your printer.

• Access yr networked scanner (two approaches):

a) temporarily access scanner by supplying the SANE URI to xsane every time you execute it:

$ xsane SANE-URI

where "SANE-URI" is the SANE URI returned by hp-makeuri.

b) make scanner permanently accessible, if CUPS is configured to use the 'hp' backend to access the printer instead of the 'socket' backend. This can be done by editing printers.conf:

$ sudo vim /etc/cups/printers.conf

and replacing the 'socket' DeviceURI with the 'hp' URI returned by hp-makeuri. Restart cups after making this change:

$ sudo /etc/init.d/cupsys restart

HTH. Please, report details if this does not work for you, but remember that StartPage is yr friend.

I would suggest using HPLIP from https://developers.hp.com/hp-linux-imaging-and-printing

It works like a charm on any Ubuntu version.
Scanner works as well.

I have just found the topic having the issue myself, tried tips here to no avail.

What was the issue at my end was having SNMPv1/v2 disabled completely at Printer's settings.

After I have enabled SNMPv1/v2 for Read Only access, scanner was discovered without any issues and works like a charm.

Hope my issue will help someone some day.

Additional note:
This particular solution might be applicable to all operating systems having issues with HP MFP devices and scanning functions.