GeForce3 and tv out issue

[BigBuG]

hello,

i've read on this forum that i am not able to use twinview with my graphic card.

then, i've done another XF84Config file.

after that i connected the tv-out of the geforce3 to the composite-in of my bt878 tv card. (just in a testing purpose)

and when i do the "startx -- :1 -xf86config XF86Config-4.tv"

the X screen turns blank (but the two instances of X are running)

my question is : is it impossible to have the two outputs (vga and composite-tv) at the same time? or is there something i missed?

here are the important sections of my XF86Config :

Section "Device"
Identifier "GeForce3"
Driver "nvidia"
Option "CursorShadow" "true"
Option "TVStandard" "PAL-N"
Option "ConnectedMonitor" "TV"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
HorizSync 30-50
VertRefresh 60
EndSection

Section "Screen"
Identifier "Default Screen"
Device "GeForce3"
Monitor "Generic Monitor"
DefaultDepth 16
SubSection "Display"
Depth 16
Modes "800x600" "640x480"
EndSubSection
EndSection

[BigBuG]

finally, i unplugged my computer and moved it next to the tv, connected it, and powered it up.

firstly, i was impressed by the fact that my graphic card managed to give a correct output on the tv w/o configuration, i could login, and run the startx -- :1 -xf86config XF86Config-4.tv perfectly. the only "little" problem is that after i switched to X, my keyboard went completely unusable.

has anyone an idea about this?