Unable to install USB Scanner Brother7420 on 20.04

in flag
  • Try to use Document Scanner. I got an error about Scanner not found
  • Downloaded driver from the Brother website
  • dpkg -i brscan2-0.2.5-1.amd64.deb
  • execute brsaneconfig2 -d and reply: found USB scanner (vendor=0x04f9, product=0x0180) at libusb:003:002 But scanimage -L reply: No scanners were identified.
  • on similar printer Brother publish some info about how to enable within the FAQ that implies to modify /lib/udev/rules.d/40-libsane.rules, but that file is not longer present on ubuntu 20.04, so I am not sure how to follow up.
  • found an error of a missing usb library, but still have a problem:

root@ubuntu20:/home/usuario# scanimage --test

scanimage: open of device brother2:bus2;dev1 failed: Invalid argument

Nmath avatar
ng flag
1st, did you try to simply use the scanner with scanner software before you tried to install software? Also your steps are unclear. You linked to a page with drivers that includes a `.deb` package which is inconsistent with what you've written above. If drivers are provided as a `.deb`, all you need to do is double click them (open them in the software center)
in flag
Thanks!. I have expand the question. I hope it is a bit more clear.
in flag

libusb-0.1-4 is missing:

root@ubuntu20:~# SANE_DEBUG_DLL=3 scanimage -L
    [23:30:54.437751] [dll] load: searching backend `brother2' in `/usr/lib/x86_64-linux-gnu/sane:/usr/lib/sane:/usr/lib64/sane'
    [23:30:54.437770] [dll] load: dlopen()ing `/usr/lib64/sane/'
    [23:30:54.437995] [dll] load: dlopen() failed ( cannot open shared object file: No such file or directory)

so libusb-0.1-4 is missing: apt-get install libusb-0.1-4

root@ubuntu20:~# scanimage -L
device `brother2:bus2;dev1' is a Brother MFC-7420 USB scanner

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