In my new computer, Okular prints only in letter format, even if I explicit set it to A4. Trying to fix it, I compared all configurations with my old compuetr (with the same opensuse 13.1, KDE 4.11.5 and Okular 0.17.5) . Then I tried some tests in the old computer and found that it prints only in A4 format, even if I explicit set it to any other format. I never noticed it before because I've never tried to change it until today.

So, where can I change the paper size?