While I appreciate the environmental gains from every Linux system I’ve used in the last couple of years defaulting to double sided printing, this gets a bit annoying when you need single sided pages for doing code refactoring.
I found today that if I loaded up a double sided postscript file into evince (gnome’s pdf / ps viewer), and told it to only do single sided printing, it did as I said. It took me this long to figure this out, so hopefully this post saves someone the trouble.