[Ayuda] xinerama

[Antonio Flores de Jesus <afloresj en segob gob mx>]

Saludos Lista:

He estado tratando de configurar la salida a 2 monitores con 2 tarjetas 
de video en
debian., una es Nvidia gx y la otra es Pine , los monitores son iguales.

He editado el archivo /etc/X/XF86config-4 y lo tengo mas o menos así: 
(Versión recortada, sin comentarios )

### BEGIN DEBCONF SECTION
# ...
# XF86Config or XF86Config-4 file?" in /usr/share/doc/xfree86-common/FAQ.gz.

Section "Files"
       FontPath        "unix/:7100"                    # local font server
       FontPath        "/usr/lib/X11/fonts/misc"
       FontPath        "/usr/lib/X11/fonts/cyrillic"
       FontPath        "/usr/lib/X11/fonts/100dpi/:unscaled"
       FontPath        "/usr/lib/X11/fonts/75dpi/:unscaled"
       FontPath        "/usr/lib/X11/fonts/Type1"
       FontPath        "/usr/lib/X11/fonts/Speedo"
       FontPath        "/usr/lib/X11/fonts/100dpi"
       FontPath        "/usr/lib/X11/fonts/75dpi"
EndSection

Section "Module"
       Load    "GLcore"
       Load    "bitmap"
       Load    "dbe"
       Load    "ddc"
       Load    "dri"
       Load    "freetype"
       Load    "glx"
       Load    "int10"
       Load    "pex5"
       Load    "record"
       Load    "speedo"
       Load    "type1"
       Load    "vbe"
       Load    "xie"
EndSection

Section "InputDevice"
       Identifier      "Generic Keyboard"
       Driver          "keyboard"
       Option          "CoreKeyboard"
       Option          "XkbRules"      "xfree86"
       Option          "XkbModel"      "pc104"
       Option          "XkbLayout"     "es"
EndSection

Section "InputDevice"
       Identifier      "Configured Mouse"
       Driver          "mouse"
       Option          "CorePointer"
       Option          "Device"                "/dev/psaux"
       Option          "Protocol"              "ImPS/2"
       Option          "ZAxisMapping"          "4 5"
EndSection

Section "InputDevice"
       Identifier      "Generic Mouse"
       Driver          "mouse"
       Option          "SendCoreEvents"        "true"
       Option          "Device"                "/dev/input/mice"
       Option          "Protocol"              "ImPS/2"
       Option          "ZAxisMapping"          "4 5"
EndSection

Section "Device"
       Identifier      "vesa right"
       Driver          "vesa"
       BusID           "PCI:2:10:0"
       VideoRam        32000
       Option          "UseFBDev"              "true"
EndSection

Section "Device"
       Identifier      "vesa left"
       Driver          "vesa"
       BusID           "PCI:1:0:0"
       VideoRam        32000
       Option          "UseFBDev"              "true"
EndSection


Section "Monitor"
       Identifier      "dell right"
       HorizSync       30-70
       VertRefresh     50-160
       #Option         "DPMS"
EndSection

Section "Monitor"
       Identifier      "dell left"
       HorizSync       30-70
       VertRefresh     50-160
       #Option          "DPMS"
EndSection


Section "Screen"
       Identifier      "Screen left"
       Device          "vesa left"
       Monitor         "dell left"
       DefaultDepth    16
       SubSection "Display"
               Depth           1
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           4
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           8
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           15
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           16
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           24
               Modes           "1280x1024"
       EndSubSection
EndSection

Section "Screen"
       Identifier      "Screen right"
       Device          "vesa right"
       Monitor         "dell right"
       DefaultDepth    16
       SubSection "Display"
               Depth           1
               Modes           "1280x1024"
               EndSubSection
       SubSection "Display"
               Depth           4
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           8
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           15
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           16
               Modes           "1280x1024"
       EndSubSection
       SubSection "Display"
               Depth           24
               Modes           "1280x1024"
       EndSubSection
EndSection

Section "ServerLayout"
       Identifier        "Default Layout"
       Screen            0     "Screen left" 0 0
       Screen            1     "Screen right" RightOf "Screen left"
       InputDevice       "Generic Keyboard"
       InputDevice       "Configured Mouse"
       InputDevice       "Generic Mouse"
       Option            "Clone" "off"
       Option            "Xinerama" "true"
EndSection

Section "DRI"
       Mode    0666
EndSection

Section "InputDevice"
       Identifier "Keyboard"
       Option "XkbModel" "pc104"
       Option "XkbLayout" "us"
       Driver "keyboard"
EndSection


Section "InputDevice"
       Identifier "Mouse"
       Option "Protocol" "PS/2"
       Option "Device" "/dev/psaux"
       Driver "mouse"
EndSection

Section "ServerFlags"
          Option "Xinerama" "true"
EndSection


/-------------------------------------- Fin 
-------------------------------------/
Lo que obtengo con esta configuración es que uno de mis monitores
muestra imagenes congeladas de lo que haya tenido anteriormente
(ya probé reiniciando el sistema ).


En la sección de Layout, también he probado lo siguiente:
Section "ServerLayout"
       Identifier        "Default Layout"
       Screen            "Screen left"
       Screen            "Screen right" RightOf "Screen left"
       InputDevice       "Generic Keyboard"
       InputDevice       "Configured Mouse"
       InputDevice       "Generic Mouse"
       Option            "Clone" "off"
       Option            "Xinerama" "true"
EndSection


Lo que obtengo es que los 2 monitores me despliegan lo mismo.

Saludos y agradezco su ayuda.

P.D. : Solo pido benevolencia, tal vez el error sea muy obvio.