Twinview doesn't behave as I want anymore
Recently I reinstalled gentoo on my computer, and I reused a few configuration files from the old gentoo installation, among these I reused /etc/X11/xorg.conf
Everything went just fine, except for one thing, twinview seems to behave a bit different now, than it used todo on my old gentoo installation.
Old behavior: (which I prefer)
KDE is aware of the two screens (2x1280x1024) and maximising windows make them to maximise on the current screen only.
I see screen 1 and screen 2 in the kde display panel (accessed via the desktop rightclick menu)
KDE seems to see only one screen at 2560x1024, and therefor making the applications not aware of the both screens, maximising them make them to maximise over both screens.
I see only one screen (screen 1) at kde display panel with the mentioned resolution above.
My question is now: How do I make KDE and other window managers to become aware of the two screens again? Note that I reused the xorg.conf, which worked as I prefered in the old gentoo installation, no changes made. So the fault can't be there.