Greetings. I've got a brother HL-5250DN printer on my local network, and it is *currently* not doing duplex printing under Fedora 20. I've seen discussions of a similar problem in various places. The responses to the problem seem to fall into several categories: (1) Duplex printing must be *enabled* on the printer before it will print duplex. (2) Some printers are not well-supported under linux. You should check the Open Printing database (or similar). (3) Get the printer driver from Brother. Regarding (1), the duplex option *is* enabled on the printer, and it *does* print in duplex from Windows and Mac systems (and others -- see below). Regarding (2), the printer printed in duplex just fine through various versions of Fedora, up through Fedora 18 (the last version I had installed prior to Fedora 20). Furthermore, it prints duplex just fine from an Ubuntu 14.04 system that I have running in VirtualBox on my Fedora machine. In all cases the duplex printing capability happened without my having to expend any brain power at all on the issue: it "just worked". Regarding (3), I've tried that, but it didn't appear to help. So far as I can tell, my problems are pretty similar to those reported by other people. One possibly novel thing: I noticed, without paying close attention, that some of the recent updates to Fedora 20 have been CUPS-related. That motivated me to roll the dice and try duplex printing again. And shazam! It worked! If that were the end of the story, I wouldn't bother to tell it. The printer once again does *not* print duplex. I'm assuming that the problem must have been fixed by one CUPS-related upgrade and broken again by a later one. Here are the candidates: # rpm -qa --last | grep -i cups cups-filters-1.0.53-2.fc20.x86_64 Thu 15 May 2014 11:48:18 AM PDT cups-filters-libs-1.0.53-2.fc20.x86_64 Thu 15 May 2014 11:48:15 AM PDT bluez-cups-5.18-1.fc20.x86_64 Fri 02 May 2014 12:18:41 PM PDT cups-1.7.2-1.fc20.x86_64 Wed 30 Apr 2014 11:41:06 AM PDT cups-libs-1.7.2-1.fc20.x86_64 Wed 30 Apr 2014 11:40:45 AM PDT cups-filesystem-1.7.2-1.fc20.noarch Wed 30 Apr 2014 11:40:45 AM PDT python-cups-1.9.65-1.fc20.x86_64 Sat 15 Mar 2014 03:09:34 PM PDT gutenprint-cups-5.2.9-14.fc20.x86_64 Mon 23 Dec 2013 11:23:50 PM PST cups-pk-helper-0.2.5-2.fc20.x86_64 Mon 23 Dec 2013 11:08:33 PM PST Unfortunately, as I said, I wasn't paying close attention to the timing of the not-work/work/not-work cycle, so I can't shed any more light on the problem. If you can, I'd love to hear from you. BTW, the driver I'm using is: Brother HL-5250DN Foomatic/Postscript and it *does* have the duplex printing option enabled: Double-sided printing: Long Edge (standard) Thanks. -- Mike -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org