vncserver geometry

It seems like vncserver in Mageia 4 (tigervnc-server-1.3.0-2.mga4) does not respect the geometry option. I have started vncserver both as a service and from the command line. I use KDE and this could perhaps also be a KDE issue. If I change the resolution manually with xrandr, then I will get the desired resolution next time I start vncserver.