frustrating xorg.conf setup with nv driver

[freeman]

Hi!
Some time ago (about two or three weeks) I have troubles with
two
monitor layout in my X.Org (FreeBSD 5.3) on my laptop.

Here is my hardware:
iRU Intro-2614
2.8CeleronD/256DDR...
SiS M650 (i use the internal X.Org driver)

I have tune it up for a Wide Screen (usin Xinerama module).
If you dont want (as I see above in your letter), just #
Xinerama
module.
Mainly part is that the two Devices (cards) just need the same
BusID
(see below).
Here is my xorg.conf file:

Section ServerFlags
...
        Option "Xinerama"
...
EndSection

...

Section "Monitor"
        Identifier  "LCDMon"
        HorizSync   31.5 - 48.5
        VertRefresh 60-60
        Option "DPMS"
EndSection

Section "Monitor"
        Identifier  "SyncMaster"
        HorizSync   31.5 - 48.5
        VertRefresh 60-60
        Option "DPMS"
EndSection

...

Section "Device"
        Identifier  "Card0"
        Driver      "sis"
        BusID       "PCI:1:0:0"
        Screen      0
EndSection

Section "Device"
        Identifier  "Card1"
        Driver      "sis"
        BusID       "PCI:1:0:0"
        Screen      1
EndSection

...

In "Screen" section we have two screens for this monitors and
devices
with needed resolution.
And in the end here is part of my "ServerLayout" section:

Section "ServerLayout"
...
        Screen 0 "Screen0" LeftOf "Screen1"
        Screen 1 "Screen1" 0 0
...
EndSection