[ltp] server layout in X.org - radeon 7500 T41

[alejo]

hi all, thanks to both, archived and close to "real-time" help from  
the users of this list i've got DRI working on my T41 with the 7500  
radeon little card.

since a week im trying to fine tune my server layout to control my  
external monitor 19" sony multiscan CRT.

i have managed to get the layout i want. withouth a clone desktop  
from the LCD but 2 independent spaces. perfect for presentations.

but when i copy paste the server layout from one xorg to the other i  
loose DRI and get the message of DRI disabled -- Dual Head  
Configuration is not working with DRI at present. Please use the  
radeon MergeFB option if you want Dual-head with DRI

below is my xorg.conf, i hope is all a question of bad  
synthax...though i tryied using MergeFB "True"  or "true" or  
"on"...DRI works fine in other configs that dont involve 2  
screens...i get 1200fps under my own glxgears realms.

as always your help is very much appreciated.
/alejo

my xorg.conf:_________________________


Section "ServerLayout"
Identifier "Dual"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
Screen 0 "Screen0" LeftOf "Screen1"
Screen 1 "Screen1" 0 0
#InputDevice    "Touchpad"  "CorePointer"
InputDevice "Mouse0" "SendCoreEvents"
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama" "off"
Option "Clone" "off"
EndSection

Section "Files"
        RgbPath "/usr/X11R6/lib/X11/rgb"
        FontPath "/usr/share/fonts/misc/"
        FontPath "/usr/share/fonts/TTF/"
#      FontPath "/usr/share/fonts/Speedo/"
        FontPath "/usr/share/fonts/Type1/"
        FontPath "/usr/share/fonts/CID/"
        FontPath "/usr/share/fonts/75dpi/"
        FontPath "/usr/share/fonts/100dpi/"
        FontPath "/usr/share/fonts/local/"
EndSection

Section "Module"
         Load    "bitmap"
         Load    "dbe"
         Load    "ddc"
         Load    "dri"
         Load    "extmod"
         Load    "glx"
         Load    "int10"
         Load    "record"
         Load    "type1"
         Load    "vbe"
         Load    "freetype"
         Load    "xtrap"
EndSection

Section "InputDevice"

Identifier "Keyboard0"
Driver "keyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "de_CH"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option    "SendCoreEvents"    "1"
Option "Emulate3Buttons" "yes"
EndSection

Section    "InputDevice"
     Driver  "mouse"
     Identifier    "Touchpad"
     Option  "Device"    "/dev/psaux"
     Option  "Protocol"    "auto-dev"
     Option  "LeftEdge"    "1900"
     Option  "RightEdge"    "5400"
     Option  "BottomEdge"    "4000"
     Option  "TopEdge"    "1900"
#    Option  "FingerLow"    "25"
#    Option  "FingerHigh"    "30"
#    Option  "MaxTapTime"    "180"
#    Option  "MaxTapMove"    "220"
     Option  "VertScrollDelta"    "1000"
     Option  "MinSpeed"    "0.02"
     Option  "MaxSpeed"    "0.08"
     Option  "AccelFactor"   "2"
     #Option "Repeater"    "/dev/mouse"
     Option "SHMConfig"    "on"
     Option  "ZAxisMapping"  "4 5"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "LCD Panel 1024x768"
HorizSync 31.5 - 90.0
VertRefresh 59.0 - 75.0
Option "dpms"
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Monitor 800x600"
HorizSync 31.5 - 35.1
VertRefresh 50.0 - 61.0
Option "dpms"
EndSection

Section "Device"
     Identifier "Videocard0"
     Driver "radeon"
     VendorName "Videocard vendor"
     BoardName "ATI Radeon Mobility 7500"
     Option         "MergeFB"         "true"
     Screen 0
EndSection

Section "Device"
     Identifier "Videocard1"
     Driver "radeon"
     VendorName "Videocard Vendor"
     BoardName "ATI Radeon Mobility 7500"
     BusID "PCI:1:0:0"
     Option         "MergeFB"         "true"
         Option         "AGPMode"                "4"     # <i>
         Option        "AGPFastWrite"           "on"    # [<bool>]
         Option             "EnablePageFlip"     "on"
     Option          "DynamicClocks"         "on"
         Option          "BackingStore"          "on"
         Option          "BIOSHotkeys"           "on"
     Screen 1
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1400x1050" "1280x1024" "1280x960" "1152x864" "1024x768"
"800x600" "640x480"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 16
# Modes "1400x1050"
Modes "1400x1050" "1280x1024" "1280x960" "1152x864" "1024x768"
"800x600" "640x480"
EndSubSection
EndSection

Section "DRI"
#Group 0
Mode 0666
EndSection



and in case someone want to see the Xorg.0.log i pasted it here:
http://pastebin.com/371834


thanks for any clues.
/a