How does KDE determine display number

[pkaplan1 at comcast.net]

I have a multiple monitor setup using Intel on board graphics (4500MHD). 

With the following xorg.conf I have the external monitor disply the right half of a large virtual desktop. (Don't ask why I need two "Monitor" sections, since either one results in overlapping displays.) 

For some reason KDE 4.3 has decided to call the internal monitor (VGA) display 2 and the external monitor (LVGA) display 1. In earlier iterations of kde, this resulted in some ocaisionally eratic behavior which disappeared when I wiped out ~/.kde and restored display 1 to the internal monitor. 

I tried wiping ~/.kde but display 1 is stuck on the external monitor. 

How does kde determine which display to put on which monitor and is it possible to force the decision? 

---------------------- 
Section "Device" 
Identifier "Intel Graphics Media Accelerator 4500MHD" 
Driver "intel" 
Option "Monitor-LVDS" "internal" 
Option "Monitor-VGA" "external" 
EndSection 

Section "Monitor" 
Identifier "external" 
Option "RightOf" "internal" 
EndSection 

Section "Monitor" 
Identifier "internal" 
Option "LeftOf" "external" 
EndSection 

Section "Screen" 
Identifier "Default Screen" 
Monitor "Configured Monitor" 
Device "Configured Video Device" 
SubSection "Display" 
Depth 24 
Virtual 2960 1050 
Viewport 0 0 
EndSubSection 
EndSection 

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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20090728/e0d42983/attachment.html>