I've just installed OpenSUSE Tubleweed on my laptop to give it a try. I'm using Gnome.
The laptop is a HP Probook 4520s with an Intel core i3 380M and Intel HD graphics.
After installing I connected the laptop to an external monitor. I configured it to single display mode so that when the external monitor is connected, it only shows there. The problem is that the changes don't persist after the computer shuts down. When I turn it on again the displays are set to extended (join displays) mode with the external monitor set as primary.
How can I make the changes persist? In Ubuntu gnome I have no problems achieving this, however, in opensuse I can't do it.

Thanks for your help in advance.