In Kubuntu 11.10, Okular does not seem to obey the CUPS default printer settings. So everytime I want to print something double-sided I have to select the option in Okular, really inconvenient. Is this a known bug? Any workarounds?
This seems to be a KDE/Qt bug:
Shortly ( http://bugs.kde.org/180051 ):
There are patches but you need to compile the Qt-libs to use them. Or use non-KDE programs ( Comment #17 From C W J Lemmens 2009-11-20 11:44:47 ):