Ran into the same scanner issue today with a Brother MFC-6490CW under Ubuntu 18.04 (factory installed by Dell and fully updated before attempting printer/scanner install). Found pdc's post on askubuntu.com ( https://askubuntu.com/a/1054065/314730 ) first, which linked to staedtler-przyborski's symlink answer ( https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1728012/comments/25 ). Worked a treat - thanks so much!
Ran into the same scanner issue today with a Brother MFC-6490CW under Ubuntu 18.04 (factory installed by Dell and fully updated before attempting printer/scanner install). Found pdc's post on askubuntu.com ( https:/ /askubuntu. com/a/1054065/ 314730 ) first, which linked to staedtler- przyborski' s symlink answer ( https:/ /bugs.launchpad .net/ubuntu/ +source/ sane-backends/ +bug/1728012/ comments/ 25 ). Worked a treat - thanks so much!