I have two Nvidia video card,Open suse linux 64 13.1.
here is my xorg.conf file
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
Screen 1 "Screen1" RightOf "Screen0"
Screen 2 "Screen2" RightOf "Screen1"
Screen 3 "Screen3" RightOf "Screen2"
Screen 4 "Screen4" RightOf "Screen3"
Screen 5 "Screen5" RightOf "Screen4"
Screen 6 "Screen6" RightOf "Screen5"
Screen 7 "Screen7" RightOf "Screen6"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

# generated from default
Identifier "Keyboard0"
Driver "kbd"
Option "AutoServerLayout" "TRUE"
EndSection

Section "Monitor"

# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection

Section "Monitor"

# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor3"
VendorName "Unknown"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection

Section "Monitor"

# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor1"
VendorName "Unknown"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection

Section "Monitor"
Identifier "Monitor4"
VendorName "Unknow"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection

Section "Monitor"
Identifier "Monitor2"
VendorName "Unknow"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection
Section "Monitor"
Identifier "Monitor5"
VendorName "Unknow"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection
Section "Monitor"
Identifier "Monitor6"
VendorName "Unknow"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection
Section "Monitor"
Identifier "Monitor7"
VendorName "Unknow"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection
Section "Monitor"
Identifier "Monitor8"
VendorName "Unknow"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection
Section "Monitor"
Identifier "Monitor9"
VendorName "Unknow"
ModelName "DELL IN1930MW"

# 1024x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 64.11 MHz
Modeline "1024x768_60.00" 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync


EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GT 610"
BusID "PCI:1:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce Gt 610"
BusID "PCI:1:0:0"
Screen 1
EndSection

Section "Device"
Identifier "Device2"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce Gt 610"
BusID "PCI:2:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Device3"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce Gt 610"
BusID "PCI:2:0:0"
Screen 1
EndSection

Section "Device"
Identifier "Device4"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce Gt 610"
BusID "PCI:3:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Device5"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce Gt 610"
BusID "PCI:3:0:0"
Screen 1
EndSection

Section "Device"
Identifier "Device6"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce Gt 610"
BusID "PCI:4:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Device7"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce Gt 610"
BusID "PCI:4:0:0"
Screen 1
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen4"
Device "Device4"
Monitor "Monitor4"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen2"
Device "Device2"
Monitor "Monitor2"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen3"
Device "Device3"
Monitor "Monitor3"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen5"
Device "Device5"
Monitor "Monitor5"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen6"
Device "Device6"
Monitor "Monitor6"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen7"
Device "Device7"
Option "AllowEmptyInitialConfiguration"
Option "metamodes" "1024x768_60 +0+0"
Monitor "Monitor7"
SubSection "Display"
Depth 24
Modes "1024x768_60.00"
EndSubSection
EndSection