I am having the exact same issue with a wireless installed brother MFC-L2740DW on Ubuntu 16.04.3. Installed the repository as suggested here. Now libsane version is 1.0.27+git20180122-xenial0 - but the problem unfortunately remains.
on starting XSANE: "failed to open device brother4:net1;dev0 invalid argument" scanimage -L device `brother4:net1;dev0' is a Brother MFC-L2740DW MFC-L2740DW scanimage --test scanimage: open of device brother4:net1;dev0 failed: Invalid argument please help ! -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
