Configured Epson Workforce WF-3640 All-in-One Printer for Ubuntu Linux 12.04 (and 14.04). From Synaptic Package Manager, installed printer-driver-escpr, then selected driver for Epson Workforce 545 with option for the Epson driver (not the CUPS driver). After installing printer on USB cable, repeated for IPP network printer via DNS-SD. On Ubuntu 14.04, the “Choose Driver” finds a “Downloadable Driver” for epson-escpr and installs from Seiko Epson Corporation as free software. Epson scanner plugged with USB cable works fine with XSane application, just as it had with the Canon MP450 it replaced.