Fooling around with it some more, I found the printer defaulting to the cdj550 driver. When I changed it to the hpijs driver, duplex started working properly.
-- duplex printing through CUPS no longer works https://bugs.launchpad.net/bugs/308817 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
