Hi I have a problem with the configuration of my graphics card is a nvidia quadro fx 1500 gift double output to set the mark multiseat me the next problem nvidia no matching device section dor intance (BusId PC:1:0:0) I'am configuration is:

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 1.0 (buildmeister@builder58) Thu Jul 17 18:39:42 PDT 2008

# Xorg configuration created by livna-config-display
#Section "ServerLayout"
# Identifier "Default Layout"
# Screen 0 "Screen0" 0 0
# InputDevice "Keyboard0" "CoreKeyboard"
# InputDevice "Synaptics" "CorePointer"
#EndSection

Section "ServerLayout"

#Option "IsolateDevice" "PCI:2:0:0"
Identifier "seat1"
Screen 0 "Screen0" 0 0
InputDevice "Synaptics" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "ServerLayout"

#Option "IsolateDevice" "PCI:1:0:0"
Identifier "seat2"
Screen 1 "Screen1" 0 0
InputDevice "Mouse2" "CorePointer"
InputDevice "Keyboard2" "CoreKeyboard"
EndSection

Section "Files"
ModulePath "/usr/lib64/xorg/modules/extensions/nvidia"
ModulePath "/usr/lib64/xorg/modules"
FontPath "/usr/share/X11/fonts/misc"
FontPath "/usr/share/X11/fonts/100dpi/:unscaled"
FontPath "/usr/share/X11/fonts/75dpi/:unscaled"
FontPath "/usr/share/X11/fonts/Type1"
FontPath "/usr/share/X11/fonts/100dpi"
FontPath "/usr/share/X11/fonts/75dpi"

EndSection

Section "Module"
Load "record"
Load "xtrap"
Load "extmod"
Load "glx"
Load "dbe"
Load "extmod"
Load "freetype"
Load "type1"
EndSection

Section "ServerFlags"
Option "AIGLX" "on"
Option "Xinerama" "0"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "es"
EndSection

Section "InputDevice"
Identifier "Keyboard2"
Driver "evdev"
Option "Device" "/dev/input/event7"
Option "XkbLayout" "es"
EndSection

Section "InputDevice"
Identifier "Mouse2"
Driver "mouse"
Option "ZAxisMapping" "4 5"
Option "Device" "/dev/input/mouse2"
EndSection

Section "InputDevice"
Identifier "Synaptics"
Driver "synaptics"
Option "Device" "/dev/input/mice"
Option "Protocol" "auto-dev"
Option "Emulate3Buttons" "yes"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "LPL"
HorizSync 30.0 - 75.0
VertRefresh 60.0
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "LPS"
HorizSync 30.0 - 83.0
VertRefresh 56.0 - 75.0
EndSection

Section "Device"
Identifier "Videocard0_0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "Quadro FX 1500M"
Option "AddARGBGLXVisuals" "True"
Option "AllowGLXWithComposite" "True"
Option "RenderAccel" "True"
Option "TripleBuffer" "True"
Option "NoLogo" "True"
Option "BackingStore" "True"
Option "DamageEvents" "True"
Option "DPMS" "True"
Option "OnDemandVBlankInterrupts" "True"
Option "Coolbits" "1"
BusID "PCI:1:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Videocard1_1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "Quadro FX 1500M"
Option "AddARGBGLXVisuals" "True"
Option "AllowGLXWithComposite" "True"
Option "RenderAccel" "True"
Option "TripleBuffer" "True"
Option "NoLogo" "True"
Option "BackingStore" "True"
Option "DamageEvents" "True"
Option "DPMS" "True"
Option "OnDemandVBlankInterrupts" "True"
Option "Coolbits" "1"
BusID "PCI:1:0:1"
Screen 1
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0_0"
Monitor "Monitor0"
DefaultDepth 24
#Option "TwinView" "0"
#Option "TwinViewXineramaInfoOrder" "DFP-0"
Option "metamodes" "nvidia-auto-select +0+0"
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Videocard1_1"
Monitor "Monitor1"
DefaultDepth 24
#Option "TwinView" "0"
#Option "TwinViewXineramaInfoOrder" "DFP-0"
Option "metamodes" "nvidia-auto-select +0+0"
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Extensions"
Option "Composite" "Enable"
EndSection

Section "DRI"
Group 0
EndSection

help me

I understood exactly none of that, after reading it three times. Directly, that may not be a problem for you, but maybe other people have the same reaction.

Welcome to LQ!!

Because there is obviously a language barrier here, you may want to get some help composing your posts.

Two quick hints:

Your file specifies the "nvidia" driver---check to be sure that it is installed (/lib/modules/$(uname -r)/drivers/video)

I don't know if you can have two ServerLayout sections--Look at this link:
http://www.xfree86.org/current/DESIGN2.html
The example there has both screens listed in one ServerLayout section

If you read the page you pointed to you will find:

"Each ServerLayout section has an identifier,"

Each having their own Identifier means more than one possible. Also in the next paragraph we find:

A ServerLayout section can be made active by being referenced on the command line. In the absence of this, a default will be chosen (the first one found).

So, multiple ServerLayouts are possible. The example given was just for the more common Xinerama type setup whereas the original poster is attempting a Multiseat setup. Please take a look at:

http://en.wikipedia.org/wiki/Multiseat

I know this thread is a little old but just wanted to clear up that one point.

Original poster I also have a hard time understanding what you are having trouble with. One thing I wonder tho when you do a:

lspci | grep VGA

Do you actually get both a the video card PCI IDs listed in your config file or only one of them?

Hi,
for what I can see (I still use multiseat with nvidia, and it works very well), for me it is eveident that you have a mistake in your xorg.conf.

You have to precise "Screen 0" for each device. I saw that you entered "Screen 1" fro the second device, that why complained that no device section (for "Screen 0").

Keep in mind, that each cards with monitor, represent a screen. And the screen begin at 0 (add 1 for each head additionnally on the board), for each card. Your second card had no "Screen 0" (just bad entry "Screen 1")