I'm also having the same or similar problem with my Epson WF-3520. Worked find at 15.10, nothing after 16.04 upgrade. I was a little confused about which set up some of the comments described here. Mine is a printer / scanner directly connected to the router and accessed wirelessly. So in theory needing to set up a backend is not required(?). I have also bugged this separately at #1613027. I've also tested a few mainline kernels to see where the problem starts (it appears to be all the 4.4... series). Reverting to an earlier kernel allows scanning to work which may be a temporary work-around. In any case I've tried the solutions raised here, but did not succeed.
Tony -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1577137 Title: saned.service masked and cannot be unmasked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1577137/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs