UPDATE 2
I continued my search within Github, (specifically at
https://github.com/pdewacht/brlaser) for a clue as to why the Brother
HL-L2320D is not working on Trisquel GNU/Linux 8.0, and I found two "Closed"
posts, and one "Open" post under the "Issues" tab that relate directly my
printer.
The first "Closed" post, created on May 23rd, 2018, entitled "HL-L2320D works
too #25" (found at https://github.com/pdewacht/brlaser/issues/25) details how
people have confirmed they are having success printing "text files" as well
as "pdf"s with the Brother HL-L2320D, using Version 5 of
"printer-driver-brlaser".
The second "Closed" post was created on October 16th, 2019, entitled "Brother
HL-L2300D not available #51", (found at
https://github.com/pdewacht/brlaser/issues/51) details how SUSE ships a
version of "printer-driver-brlaser" that is not up-to-date, and that the
recommended solution to enable "support for the HL-L2300D &co", as it was
introduced in "version 5" is to compile "brlaser from source" which may allow
the Brother "HL-L2300D &co" to actually work as intended on SUSE.
The only "Open" post I found, created on October 25, 2019, entitled
"HL-L2320D can't print this pdf" (found at
https://github.com/pdewacht/brlaser/issues/52) details how a person is having
problems printing a PDF page, using Version 5 of "printer-driver-brlaser".
The recommended solution for this issue, it appears, is to use Version 6 of
"printer-driver-brlaser".
It then appears to me, that the current version of "printer-driver-brlaser",
Version 3-5~ubuntu1 for Trisquel GNU/Linux 8.0 is indeed out-of-date, and
that using version 6, created on September 22, 2019, may actually enable my
printer to work. As mentioned earlier, I do not have alot of technical
expertise, and am unfamiliar with compiling software from areas beyond the
official repos, such as from Github. This will be my next step, and I will
report back when I learn how to do this.
