On further investigation, I cannot print a Postscript file duplex at all, either using lp or from Evince, so the problem appears to be with CUPS's Postscript backend.
** Summary changed: - Command-line duplex option to lp is ignored + Duplex options ignored for printing Postscript -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1087075 Title: Duplex options ignored for printing Postscript To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1087075/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
