setting up a brother inkjet all-in-one on Focal Fossa

[Joel Rees]

I've got a brother DCP-J957N that, near as I can recall, just worked
on Ubuntu 18. That is, it works on my bionic beaver workstations, and
I do not recall doing anything to actually set it up. I think it found
the printer during the install or when I first tried printing. I also
don't remember doing anything on my daughter's workstation, either,
when we installed Bionic Beaver there.

I've updated my daughter's workstation to 20 for reasons that may not
have been very good, and it no longer seems to be able to communicate
with the printer.

I went to the trouble (gritting my teeth) of downloading brother's
proprietary installer, and walked the script through, and no dice.

First question, what changed? What should I have done before trying
the install script?

-- 
Joel Rees

http://reiisi.blogspot.jp/p/novels-i-am-writing.html