Please describe the problem:
I know this is probably a wanted behaviour, but there should be a way to cancel it, for instance a reset button.

Setting the resolution via gnome-display-properties forbids any use of xorg.conf to set correct resolutions. This is particularly painful in conjunction with the bug #562944 ("In multi-screen setting, I cannot choose on which screen the gnome panel should be").

Steps to reproduce:
1. Configure a custom xorg.conf, for instance non-cloned dual-screen.
2. Play a bit with gnome-display-properties.
3. Figure out you cannot do what you want with gnome-display-properties, so come back to xorg.conf.
4. Restart X.


Actual results:
Xorg.conf settings are simply ignored, it is not possible to cancel gnome-display-properties settings if it cannot do what you want.

Expected results:
One should be able to cancel gnome-display-properties settings if it cannot do what one wants.

Does this happen every time?
Yes.

Other information:
This bug is a duplicate of #560827, which I found not explicit enough as it contains two bugs. Sorry for that.