<html dir="ltr"><head></head><body style="text-align:left; direction:ltr;"><div>On Fri, 2019-09-13 at 21:40 -0400, Kip Shaffer wrote:</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><div dir="ltr">Scanning Results! I updated to today's version: 1.0.28+git20190913-bionic0<div><br></div><div>Using Simple Scan I was able to scan at 75, 150, 300, 600, 1200, and 2400 dpi in both Text and Photo modes. Perfect!</div><div><br></div><div>When scanning from the document feeder, it scans front and back, one sheet or many, but after the job is done there is a pause, and then it says "Error communicating with scanner". </div><div><br></div><div>Also, this has all been through USB. I tried to connect with the network and scanimage -L cannot find it. I added the address to pixma.conf (neither line helped):</div><div>bjnp://MF640_192.168.1.97<br>bjnp://<a href="http://192.168.1.97">192.168.1.97</a><br></div></div></blockquote><div><br></div><div>Apologies for the late reply: have been too busy with my new server lately, so I only got back to sane/ bjnp this week</div><div>As the MF644Cdw is a laserjet, it does not use bjnp as all laserjets use mfnp as protocol. This is almost identical to bjnp but uses a different port and has a few deviations. The bjnp code supports mfnp as well, just change the bjnp in bjnp://MF640_192.168.1.97 to mfnp://....</div><div><br></div><div>The backend should normally detect the scanner when computer and scanner are on the same subnet. I have never worked with a laserjet myself (wrote the code while testing over a tunnel to are remote device in Canada (I am in Europe).....</div><div>I seem to recall that there is a switch or something similar that needs to be activated for network based scanning.</div><div><br></div><div>Now Canon may have dropped mfnp from the laserjet series completely like they are doing with bjnp for the inkjets. Can you try to see what the scanner advertises with something like "avahi-browse -a" (press control-c after a few seconds)?</div><div><br></div><div>best regards, Louis</div></body></html>