Having the same problem with ATI Radeon 9200 on a MacMini DVI, though there's no "MonitorLayout" option defined.
The final resolution is 840x1050x60Hz instead of 1680x1050x60Hz (exactly half the screen width).
Having the same problem with ATI Radeon 9200 on a MacMini DVI, though there's no "MonitorLayout" option defined.
The final resolution is 840x1050x60Hz instead of 1680x1050x60Hz (exactly half the screen width).