[Bug 41610] xorg.conf used to trigger the bug (relevant excerpt, full dump in bug#41607)

[Jiri Bajer]

Section "Device"
        Identifier "Radeon Mobility 9600 MergedFB"
        Driver "radeon"
        BusID "PCI:1:0:0"
        Option "MergedFB" "true"
        Option "CRT2HSsync" "30-80"
        Option "CRT2VRefresh" "59-85"
        Option "MonitorLayout" "LVDS,TMDS"
        Option "OverlayOnCRT2" "true"
        Option "MetaModes" "1400x1050-1280x1024 1400x1050"
        Option "MergedNonRectangular" "true"
        Option "CRT2Position" "RightOf"
        Option "MergedDPI" "100 100"
        Option "DynamicClocks" "true"
        Option "BIOSHotkeys" "true"
EndSection

Section "Monitor"
        Identifier "Generic LCD"
        Option "DPMS"
        Option "DDCMode" "on"
EndSection

Section "Screen"
        Identifier "MergedFB Screen"
        Device "Radeon Mobility 9600 MergedFB"
        Monitor "Generic LCD"
        DefaultDepth 24
        SubSection "Display"
                Depth 24
                Modes "1400x1050"
        EndSubSection
EndSection

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Screen Resolution tool fails to switch between MergedFB "dualhead" and "clone" modes
https://launchpad.net/bugs/41610