No MergedXinerama for xrandr

[Quinn Harris]

Before many video drivers changed from MergedFB to xrandr 1.2 for a dual head 
video card they had an option like "NoMergedXinerama" 
for the Radeon driver that would make the two screens appear as one to the 
window manager.  Does a similar option exist somewhere now 
with xrandr 1.3?  Is there a way to completely disable a window managers 
awareness of multiple screens?

I have a Viewsonic VP2290b that needs to be driven by two DVI ports to run at 
full resolution at a usable refresh rate (24hz).  But I 
don't want the desktop (KDE 4.2) to treat the single monitor like two in any 
way.

I was using the proprietary nVidia drivers with the "NoTwinViewXineramaInfo" 
option for a similar effect.

My current xorg.conf file:

Section "Monitor"
        Identifier     "Monitor0"
        VendorName     "ViewSonic"
        ModelName      "VP2290b"
        Modeline       "1920x2400_24" 119.40 1920 1928 1980 2044 2400 2402 
2405 2435
        ModeLine       "1920x2400_30" 149.3 1920 1928 1980 2044 2400 2402 2405 
2435
EndSection

Section "Monitor"
        Identifier     "Monitor1"
        VendorName     "ViewSonic"
        ModelName      "VP2290b"
        Modeline       "1920x2400_24" 119.40 1920 1928 1980 2044 2400 2402 
2405 2435
        ModeLine       "1920x2400_30" 149.3 1920 1928 1980 2044 2400 2402 2405 
2435
        Option         "LeftOf" "Monitor0"
EndSection

Section "Device"
        Identifier     "Device0"
        Driver         "ati"
        Option      "AccelMethod" "EXA"
        Option      "AccelDFS"    "true"

        Option      "monitor-DVI-0"     "Monitor0"
        Option      "monitor-DVI-1"     "Monitor1"
EndSection

Section "Screen"
        Identifier     "Screen0"
        Device         "Device0"
        Monitor        "Monitor0"
        DefaultDepth    24
        SubSection "Display"
                Virtual    3840 2400
                Depth       24
                Modes      "1920x2400_24"
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier     "Layout0"
        Screen      0  "Screen0" 0 0
EndSection

Section "ServerFlags"
        Option  "DontZap"       "False"
EndSection


---
Quinn Harris
quinn at qutek.net