https://forum.ubuntu.ru/index.php?topic=200844.0
Читать со слов "Переходим к настройке рабочей станции."
sudo apt-get install sane sane-utils libsane xsane xsane-common
sudo gedit /etc/sane.d/net.conf
192.168.0.1:9100 //добавляю
192.168.0.1 //или
scanimage -Lq //И получаю ответ
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
Сканер совмещен с принтером, при прямом подключении к ноутбуку по usb все работает.