The problem is in Poppler. The fix I have done in Poppler to allow documents with pages of different sizes sets the page size in each page header. Setting the page size resets the duplex to print on the front side and so it gets never printed on back sides. I have fixed this by checking whether the current page size is different to the size of the previous page and only add a page size request to pages with a new size now.
** Changed in: poppler (Ubuntu) Status: Fix Released => Triaged ** Changed in: poppler (Ubuntu Jaunty) Status: Fix Committed => Triaged -- pdftops CUPS filter has several problems https://bugs.launchpad.net/bugs/382379 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