On a different computer the backends were in both directories. I figured out that inputting "sudo dpkg-reconfigure cupsys" gives a selection of the backends. I had reinstalled cupsys I believe, and the configuration probably did not appear, since it was already configured. I must have skipped over the configuration at some time.
-- backend modules for cups in wrong directory https://launchpad.net/bugs/70881 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
