My bad: the 'ENV' line is on by default, not the 'SYMLINK', my apologies. Following is the content of the 60-brother-mfp-type1.rules installed by the brother-udev-rule-type1 package. Uncommenting the options at the bottom doesn't make any difference: the scanner only works with xsane as true root.
# # udev rules sample for Brother MFP # version 1.0.2-0 # # Copyright (C) 2012-2016 Brother. Industries, Ltd. # # copy to /etc/udev/rules.d or /lib/udev/rules.d # ACTION!="add", GOTO="brother_mfp_end" SUBSYSTEM=="usb", GOTO="brother_mfp_udev_1" SUBSYSTEM!="usb_device", GOTO="brother_mfp_end" LABEL="brother_mfp_udev_1" SYSFS{idVendor}=="04f9", GOTO="brother_mfp_udev_2" ATTRS{idVendor}=="04f9", GOTO="brother_mfp_udev_2" GOTO="brother_mfp_end" LABEL="brother_mfp_udev_2" # ATTRS{bInterfaceNumber}=="01", GOTO="brother_mfp_udev_3" # ATTRS{bInterfaceNumber}=="02", GOTO="brother_mfp_udev_3" # ATTRS{bInterfaceNumber}=="03", GOTO="brother_mfp_udev_3" # GOTO="brother_mfp_end" # LABEL="brother_mfp_udev_3" ATTRS{bInterfaceClass}!="0ff", GOTO="brother_mfp_end" ATTRS{bInterfaceSubClass}!="0ff", GOTO="brother_mfp_end" ATTRS{bInterfaceProtocol}!="0ff", GOTO="brother_mfp_end" #MODE="0666" #GROUP="scanner" ENV{libsane_matched}="yes" #SYMLINK+="scanner-%k" LABEL="brother_mfp_end" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1728012 Title: Many 3rd party scanner drivers are broken by a sane change To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1728012/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs