I just switched from Xfce to KDE. I'm experiencing the same problem with Okular Version 1.9.3 on a new installation of Kubuntu 20.04.
In addition to what Bruce reported, I also tried changing the printer setting from "Letter" to "Letter/ANSI A," but that made no difference. I then tried printing the document with qpdfview 0.4.18, which worked as expected (I'm noting this because I'm not sure if this is considered a KDE application or not). One thing I did differently than Bruce is that I was printing duplex. System Information: KDE Plasma Version 5.18.5 KDE Frameworks Version 5.68.0 Qt Version 5.12.8 Kernel Version 5.8.0-9.3-liquorix-amd64 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1805307 Title: Okular does not use system-wide printer settings To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/okular/+bug/1805307/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs