MergedFB + 9600 Problem

[no.lan at laposte.net]

Hi everyone,

I am getting dumb with my xorg.conf. Dual head is working well with 
mergedfb option. X starts, and i can do everything except using Firefox 
and rdesktop. When i use firefox or rdesktop all the computer hang, and 
i need to reset. When i switch to simple head monitor, everything is 
working well. Si i hope i will find some help about this problem.

I currently use OpenBSD 4.0 with Xorg 6.9.0.

Here si my latest xorg.conf :


Section "Module"
    Load        "dbe"  	# Double buffer extension
    SubSection  "extmod"
      Option    "omit xfree86-dga"   # don't initialise the DGA extension
    EndSubSection
    Load        "type1"
    Load        "freetype"
    Load       "glx"
EndSection

Section "Files"
    RgbPath	"/usr/X11R6/lib/X11/rgb"
    FontPath   "/usr/X11R6/lib/X11/fonts/misc/"
    FontPath   "/usr/X11R6/lib/X11/fonts/TTF/"
    FontPath   "/usr/X11R6/lib/X11/fonts/Type1/"
    FontPath   "/usr/X11R6/lib/X11/fonts/CID/"
    FontPath   "/usr/X11R6/lib/X11/fonts/75dpi/"
    FontPath   "/usr/X11R6/lib/X11/fonts/100dpi/"
    FontPath   "/usr/X11R6/lib/X11/fonts/local/"
    FontPath   "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
    FontPath   "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
    FontPath   "/usr/local/lib/X11/fonts/ghostscript/"
    FontPath   "/usr/local/lib/X11/fonts/mscorefonts/"
EndSection

Section "InputDevice"
    Identifier	"Keyboard1"
    Driver	"kbd"
    Option "AutoRepeat" "500 30"
    Option "XkbRules"	"xorg"
    Option "XkbModel"	"pc105"
    Option "XkbLayout"	"fr"
EndSection

Section "InputDevice"
    Identifier	"Mouse1"
    Driver	"mouse"
    Option "Protocol"    "wsmouse"	# wsmouse protocol
    Option "Device"      "/dev/wsmouse"
    Option "ZAxisMapping" "4 5"
EndSection

Section "Monitor"
    Identifier  "e172fp"
    HorizSync   31-80 
    VertRefresh 56-75
    Option      "DPMS"
    ModeLine    "1280x1024" 108.00 1280 1328 1440 1688 1024 1025 1028 1066
EndSection


Section "Monitor"
    Identifier  "e1800fp"
    HorizSync   30-70
    VertRefresh 56-75    
    Option      "DPMS"
    ModeLine    "1280x1024" 108.00 1280 1328 1440 1688 1024 1025 1028 1066
EndSection

Section "Device"
    Identifier  "9600"
    Driver      "radeon"
    BusID "PCI:1:0:0"
    Option "MonitorLayout" "TMDS, TMDS"
    Option "MergedFB" "true"
    Option "CRT2HSync" "31-80"
    Option "CRT2VRefresh" "56-75"
    Option "CRT2Position" "LeftOf"
    Option "MetaModes" "1280x1024-1280x1024"
    Option "MergedXinerama" "True"
EndSection

Section "Screen"
    Identifier  "Screen 1"
    Device      "9600"
    Monitor     "e1800fp"
    DefaultDepth 24
    Subsection "Display"
        Depth       24
        Modes       "1280x1024" #"1280x1024" "1024x768" "800x600" "640x480"
        Virtual     2560 1024
    EndSubsection
EndSection

Section "ServerLayout"
    Identifier  "Simple Layout"
    Screen "Screen 1"
    Screen "Screen 2"
    InputDevice "Mouse1" "CorePointer"
    InputDevice "Keyboard1" "CoreKeyboard"
    Option      "BlankTime"   "0"
    Option      "StandbyTime" "0"
    Option      "SuspendTime" "0"
    Option      "OffTime"     "0"
EndSection


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