From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jack Hill <jackhill@jackhill.us>
Subject: Color calibrating scanner with GNOME
Date: Sat, 16 Mar 2019 15:40:14 -0400 (EDT)
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Hi Guix,

I'm trying to color calibrate my scanner while running GNOME by following 
these instructions: 
https://help.gnome.org/users/gnome-help/stable/color-calibrate-scanner.html.en

I have produced a tiff of my calibration target, but my scanner doesn't 
show up in the GNOME settings color submenu. The only device show is my 
laptop screen.

GNOME's simple-scan and sane-backend's* scanimage can use the scanner, and 
scanimage reports it as:

$ scanimage -L
device `pixma:MF4800_Canon5e5c59' is a CANON Canon i-SENSYS MF4800 Series multi-function peripheral

The device is connected over the network.

What should I do to try to calibrate my scanner?

Best,
Jack

* The name of this package is slightly confusing, since it also contains 
the front-end tools like scanimage. I don't know if it makes sense to make 
a change here or not.