On Fri, 2019-11-08 at 10:12 +1300, John Tait via sane-devel wrote: > Thank you Rolf, I think I did see that but it didn't register with me > at the time. This is a new printer replacing one that had a wired > connection and I haven't made the mental jump that I am now using a > wifi connection. > > > John > The same problem will occur if you would connect to the scanner over ethernet: canon is removing the bjnp/mfnp protocols from recent scanner models, See the man-page for sane-pixma in GIT, updated yesterday for a description of a method of finding out if you device supports one of these protocols.
Basically start avahi-discover and look at the content of the _scanner._tcp entry for the device. If this does not mention port 8610 (mfnp) or 8612 it is likely that the scanner does not one of these protocols Louis
