I have an Oki C5200n that is not printing in duplex. It prints one sheet per page, but the first one is "correct" and the second one is upside-down.
I've uninstalled the ubuntu drivers and followed the instructions in http://foo2hiperc.rkkda.com/
, but the problem remains exactly the same.
I've also tried configuring printing thru jetdirect and IPP.
Anyone knows anything else I should try?