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<font face="Helvetica, Arial, sans-serif">It</font> turns out the
issue was my the ufw firewall. <br>
<br>
In the notes for Sane.pixma.5 at <a class="postlink"
href="http://www.sane-project.org/man/sane-pixma.5.html">http://www.sane-project.org/man/sane-pixma.5.html</a>
it explains that I need to open port 8612 in both directions so sane
could see the scanner. I did that and now all works well.<br>
<br>
For anyone having similar problems with Canon scanners, make sure
you try opening that port.
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