Using 18.04 (wip), I had the same problem with a Brother J4625DW all in one printer/scanner. Installing the driver from Brother (http://support.brother.com/g/s/id/linux/en/instruction_scn1b.html?c=us_ot&lang=en&redirect=on) instead of the brother driver from the repos solved the problem, so it might be a workaround for those using Brother scanners.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1512027 Title: open of device pixma:MX7600_... failed: invalid argument To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1512027/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs