RandR with two physical cards

[Ing. Luis Felipe Domínguez Vega]

Hello, I have a problem with a 2 graphics card configuration. I have an 
internal intel (iGPU i7 4xxx) and a very old Trident TGUI 9xxx PCI card. If I 
use the card as primary kde starts great, but i need configure in Multi-Monitor 
mode. I can't use Xinerama because then the XOrg server don't start. With the 
current configuration i have the main display OK and the second display 
(connected to the Trident) in black with the cursor as X (i can move the 
cursor to that display). So how enable this two monitors with two cards??
xrandr don't detect my second screen, this are the outuputs:

xrandr --listproviders
-----------------------------------------------------------
Providers: number : 1
Provider 0: id: 0x45 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 3 
outputs: 3 associated providers: 0 name:Intel
-----------------------------------------------------------

xrandr --q
-----------------------------------------------------------
Screen 0: minimum 8 x 8, current 1366 x 768, maximum 32767 x 32767
HDMI1 disconnected (normal left inverted right x axis y axis)
VGA1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 
410mm x 230mm
   1366x768      59.79*+
   1024x768      75.03    60.00  
   800x600       72.19    75.00    60.32  
   640x480       75.00    72.81    59.94  
   720x400       70.08  
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
-----------------------------------------------------------

I'm using Debian testing with Xorg 1:7.7+19 amd64 and put the config files into 
this:

/etc/X11/xorg.conf.d/97-intel.conf
-----------------------------------------------------------
Section "Device"
        Identifier      "intel"
        Driver          "intel"

        BusID           "PCI:0:2:0"
EndSection
Section "Screen"
        Identifier      "Screen 0"
        Device          "intel"
        Monitor         "Monitor 0"
        DefaultDepth    16
EndSection
Section "Monitor"
        Identifier      "Monitor 0"
        Option          "DPMS"
EndSection
-----------------------------------------------------------

/etc/X11/xorg.conf.d/98-trident.conf
-----------------------------------------------------------
Section "Device"
        Identifier      "tridentcard"
        Driver          "trident"

        Option          "NoAccel" "True"
        Option          "ShadowFB" "Enable"
        Option          "NoPciBurst" "Enable"
        Option          "FramebufferWC"

        Option          "NoDDC"
        Option          "UseTiming800"

        Option          "AccelMethod" "EXA"
        BusID           "PCI:5:0:0"
EndSection
Section "Screen"
        Identifier      "Screen 1"
        Device          "tridentcard"
        Monitor         "Monitor 1"
        DefaultDepth    16
        SubSection "Display"
             Depth    16
             Modes    "640x480_60"
             Virtual  800 600
        EndSubSection
EndSection
Section "Monitor"
        Identifier      "Monitor 1"
        HorizSync       30.0 - 62.0
        VertRefresh     50.0 - 70.0
#        Option         "DPMS"
EndSection
-----------------------------------------------------------

/etc/X11/xorg.conf.d/99-layout.conf 
-----------------------------------------------------------
Section "ServerLayout"
  Identifier   "Main"
  Screen       0 "Screen 0"
  Screen       1 "Screen 1" RightOf "Screen 0"
  Option         "Xinerama" "0" 
EndSection
-----------------------------------------------------------
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