configure xorg for flat panel

[PJ]

Somehow, the web does show there are problems setting up flat panels but
I have found no solutions.
FreeBSD 7.2, Xorg 1.6 something - it's the latest for FBSD, driver is nv
(Nvidia) FX5600, the monitor is LG W2361.
I cannot find any errors in /var/log/Xorg.0.log
# Xorg -config xorg.conf.new 
produces only a black screen regardless of what mouse I may be using -
the mouse setup is always "auto" and "sysmouse" - the log shows
"Silkenmouse" enabled (At the moment it is an IBM usb with button (cute
blue) :-)
the keyboard - same stuff: specify an "us,ca" keyboard or leave it as
default...
Same for the mode of the monitor same non-functionality as DVI or as
DSUB - digital or analog.
"AllowEmptyInput" "off" only prevents getting out of the test mode -
even ctl/Alt/Del does not respond.
The log shows that the monitor is being detected correctly; the
parameters for the monitor are displayed correctly... but there is no
mouse, no keyboard, no image
"DontZap" has no discernible effect.
hal is on
I have no problems with Xorg on this machine or another with analog
monitors. All work just fine.
Xorg just plain refuses to start... yet the monitor works fine on XP as
digital or analog and works in dual mode with another analog monitor.
And, yes I did read the manual and did try various options suggested on
the web....
So what's the story here?
I tried to avoid bothering the list, but this is getting a little
ridiculous.
Oh, yes, at one point when shutting down with ctl/alt/del there was a
very clear X in the middle of the screen - but it would not move and
then the machine rebooted.