Comment 86 for bug 1707352

Please try 'sudo scanimage -L'

if scanimage succeeds and finds the scanner check if you have a file named 79-udev-epson.rules in /etc/udev/rules.d

If yes content:

If no it should have the following content:

# chmod device EPSON group
ATTRS{manufacturer}=="EPSON", DRIVERS=="usb", SUBSYSTEMS=="usb", ATTRS{idVendor}=="04b8", ATTRS{idProduct}=="*", MODE="0777"