This is still a problem with Yaketty Yak. It looks like the systemd configuration files are messed up and urgently need to be fixed.
In my configuration (Epson RX420 scanner/printer) connected via USB with the local user trying to scan: found USB scanner (vendor=0x04b8 [EPSON], product=0x080f [USB MFP]) at libusb:003:005 However, scanimage -L 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). Updating from the PPA mentioned above scanimage still doesn't work, but XSane does. Note: the ppa does not support Yaketty, so I added it using Synaptics (adding repository ppa:rolfbensch/sane-git, then changed the distribution field to Xenial. This updates sane to 1.0.26-git20160712-xenial0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1577137 Title: saned.service masked and cannot be unmasked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1577137/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs