Expand desktop over 4 displays

[xindon]

Hey folks,

at my workstation I'm using 2 NVidia Quadros and 4 TFTs.
I already got the dual/quad view working by configuring the xorg.conf file.

But I've got a small problem in expanding the desktop over all the four
displays.
The taskbar (panel) is just on the first two monitors. The other two screens
work well, I can move a window on them, but when I maximize a window, it
either fills the first two displays or the other two.

Here's my ServerLayout Section:

Section "ServerLayout"
	Identifier     	"Default Layout"
	Screen 		"Screen0"
	Screen 		"Screen1" RightOf "Screen0"
	Option		"Clone" "off"
	Option		"Xinerama" "on"
	InputDevice    	"Mouse0" "CorePointer"
	InputDevice    	"Keyboard0" "CoreKeyboard"
EndSection



I think the problem is in the ServerLayout there are two Screens declared.
If there was only one screen, the taskbar would fill the complete width of
all 4 displays and windows would maximize over all the displays.

Now my question: How can I solve this problem? Maybe it's possible to
combine the two screens to one so the x server has only one screen as
desktop?

Thank you very much



Here's my complete xorg.conf file:

##################################
######### SERVER LAYOUT ##########
##################################
Section "ServerLayout"
	Identifier     	"Default Layout"
	Screen 		"Screen0"
	Screen 		"Screen1" RightOf "Screen0"
	Option		"Clone" "off"
	Option		"Xinerama" "on"
	InputDevice    	"Mouse0" "CorePointer"
	InputDevice    	"Keyboard0" "CoreKeyboard"
EndSection


#######################
####### FILES #########
#######################
Section "Files"
	RgbPath      	"/usr/share/X11/rgb"
	ModulePath   	"/usr/lib/xorg/modules"
	
	# path to defoma fonts
    	FontPath        "/usr/share/fonts/X11/misc"
    	FontPath        "/usr/X11R6/lib/X11/fonts/misc"
    	FontPath        "/usr/share/fonts/X11/cyrillic"
    	FontPath        "/usr/X11R6/lib/X11/fonts/cyrillic"
    	FontPath        "/usr/share/fonts/X11/100dpi/:unscaled"
    	FontPath        "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
    	FontPath        "/usr/share/fonts/X11/75dpi/:unscaled"
    	FontPath        "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
    	FontPath        "/usr/share/fonts/X11/Type1"
    	FontPath        "/usr/X11R6/lib/X11/fonts/Type1"
    	FontPath        "/usr/share/fonts/X11/100dpi"
    	FontPath        "/usr/X11R6/lib/X11/fonts/100dpi"
    	FontPath        "/usr/share/fonts/X11/75dpi"
    	FontPath        "/usr/X11R6/lib/X11/fonts/75dpi"
    	FontPath        "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection


#######################
####### MODULES #######
#######################
Section "Module"
    	Load           "i2c"
    	Load           "bitmap"
    	Load           "ddc"
	Load           "extmod"
    	Load           "freetype"
    	Load           "glx"
    	Load           "int10"
    	Load           "type1"
    	Load           "vbe"
EndSection


##########################
######## KEYBOARD ########
##########################
Section "InputDevice"
    	Identifier     "Keyboard0"
    	Driver         "kbd"
    	Option         "CoreKeyboard"
    	Option         "XkbRules" "xorg"
    	Option         "XkbModel" "pc105"
    	Option         "XkbLayout" "de"
    	Option         "XkbVariant" "nodeadkeys"
EndSection


#######################
######## MOUSE ########
#######################
Section "InputDevice"
    	Identifier     "Mouse0"
    	Driver         "mouse"
    	Option         "CorePointer"
    	Option         "Device" "/dev/input/mice"
    	Option         "Protocol" "ExplorerPS/2"
    	Option         "Emulate3Buttons" "true"
EndSection


###################################
######## GRAPHICAL DEVICES ########
###################################
Section "Device"
	Identifier  	"Card0"
	Driver      	"nvidia"
	VendorName  	"nVidia Corporation"
	BoardName   	"NV44 [Quadro NVS 285]"
	BusID       	"PCI:1:0:0"
	Option 		"TwinView"
	Option 		"TwinViewOrientation" "RightOf"
	Option 		"Xinerama" "on"
	Option 		"Metamodes" "1280x1024,1280x1024"
EndSection

Section "Device"
	Identifier  	"Card1"
	Driver      	"nvidia"
	VendorName  	"nVidia Corporation"
	BoardName   	"NV34GL [Quadro NVS 280 PCI]"
	BusID       	"PCI:9:5:0"
	Option 		"TwinView"
	Option 		"TwinViewOrientation" "RightOf"
	Option 		"Xinerama" "on"
	Option 		"Metamodes" "1280x1024,1280x1024"

EndSection


###########################
######## MONITORS #########
###########################
Section "Monitor"
    	Identifier	"Monitor0"
	VendorName   	"Fujitsu Siemens"
	ModelName    	"P19-2"
    	Option         	"DPMS"
EndSection

Section "Monitor"
    	Identifier	"Monitor1"
	VendorName   	"n/a"
	ModelName    	"n/a"
	Option         	"DPMS"
EndSection


############################
######### SCREENS ##########
############################
Section "Screen"
	Identifier 	"Screen0"
	Device     	"Card0"
	Monitor    	"Monitor0"
	DefaultDepth    24

	SubSection "Display"
        	Depth       	1
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	4
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	8
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	15
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	16
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	24
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
EndSection

Section "Screen"
	Identifier 	"Screen1"
	Device     	"Card1"
	Monitor    	"Monitor1"
	DefaultDepth    24

	SubSection "Display"
        	Depth       	1
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	4
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	8
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	15
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	16
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
    	
	SubSection "Display"
        	Depth       	24
        	Modes      	"1280x1024" "1024x768" "800x600" "720x400" "640x480"
    	EndSubSection
EndSection
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