Same problem here with HP printer "HP Color LaserJet MFP M476dn" on Linux Mint 17 (based Ubuntu 14.04.2 LTS).
Scanning duplex is working well in Xsane and gscan2pdf, but with Simple Scan only the front side of each page is scanned. Additional info: gscan2pdf is working with interface "libsane-perl" and scanimage. Linux Mint 17 (based Ubuntu 14.04.2 LTS) hplip: 3.5.17 (LM17 comes with hplip 3.14.3, but printer needs 3.5.17) simple scan: 3.12.1-0ubuntu1 Xsane: 0.998-5ubuntu1 gscan2pdf 1.2.3-1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/892915 Title: Duplex scanning not working with some Canon/Samsung models To manage notifications about this bug go to: https://bugs.launchpad.net/simple-scan/+bug/892915/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs