NVIDIA RIVA TNT, 16MB Help needed for TV out

I have a NVIDIA RIVA TNT, 16MB AGP2x card. I attached a 2.4Ghz
transmitter that connects to the TV in my living room on the S VIDEO
output of my graphics card.

I have windows 2000 on my Pentium II system. I was hoping that I would
be able to see something at the TV out as well as on my monitor.
Besides the regular Microsoft driver, I have tried several other
Nvidia drivers. FOr most of them I ended up having the following
result:

When I plug in the Svideo for TV upon reboot the TV is detected and I
can see the output on the TV but the monitor goes blank. When it is
rebooted with Svideo cable off I can never get an output on the TV.

I have never been able to manage to see BOTH on TV and the Monitor.

WIth one of the drivers I have tried I managed to get a driver screen
where there is an option to select TV oR Analog. But the TV is not
detected after boot time and the selection will not be available

Any ideas?
--ali ziya

Ali Ziya wrote:
I have a NVIDIA RIVA TNT, 16MB AGP2x card. I attached a 2.4Ghz
transmitter that connects to the TV in my living room on the S VIDEO
output of my graphics card.

I have windows 2000 on my Pentium II system. I was hoping that I would
be able to see something at the TV out as well as on my monitor.
Besides the regular Microsoft driver, I have tried several other
Nvidia drivers. FOr most of them I ended up having the following
result:

When I plug in the Svideo for TV upon reboot the TV is detected and I
can see the output on the TV but the monitor goes blank. When it is
rebooted with Svideo cable off I can never get an output on the TV.

I have never been able to manage to see BOTH on TV and the Monitor.

WIth one of the drivers I have tried I managed to get a driver screen
where there is an option to select TV oR Analog. But the TV is not
detected after boot time and the selection will not be available

Any ideas?

The TNT chipset only has one RAMDAC, so you can use either the TV out or the
monitor, not both at the same time. To be able to send a signal to both you
could get a signal splitter, or upgrade the card to a GF4 or GF FX card as
most of these have 2 RAMDACs (the GF2 and GF3 cards do not).

Dan

Oh, one other thing, the TV out only working when booting up with the cable
connected is normal. The TV out socket only initialises if there is a device
detected connected to the socket (not just a bare cable, it has to be
connected to a TV or other device and therefore has a resistance that is
readable by the TV out chipset). Once initialised there will be an option in
the drivers to switch between TV out and the VGA output (or use dualview or
clone/stretch if you have a GF4 or GF FX card).

Dan

"Daniel Crichton" wrote in message ...
Oh, one other thing, the TV out only working when booting up with the cable
connected is normal. The TV out socket only initialises if there is a device
detected connected to the socket (not just a bare cable, it has to be
connected to a TV or other device and therefore has a resistance that is
readable by the TV out chipset). Once initialised there will be an option in
the drivers to switch between TV out and the VGA output (or use dualview or
clone/stretch if you have a GF4 or GF FX card).

Dan

Thanks Dan,
I managed to get a simultaneous output using a program called TVtool
which includes sthc called nview. After installing one of the nvidia
drivers and the tvtool, magically, I was on both of the screens at the
same time. I guess I need to run the tvtool and select the appropriate
buttons for that each time I turn the machine on. One more thing, I
seem to be stuck to the maksimum 800x600 monitor resolution with a low
color setting i think i can live with that.
--ali ziya

Ali Ziya wrote:
"Daniel Crichton" wrote in message
...
Oh, one other thing, the TV out only working when booting up with
the cable connected is normal. The TV out socket only initialises if
there is a device detected connected to the socket (not just a bare
cable, it has to be connected to a TV or other device and therefore
has a resistance that is readable by the TV out chipset). Once
initialised there will be an option in the drivers to switch between
TV out and the VGA output (or use dualview or clone/stretch if you
have a GF4 or GF FX card).

Dan

Thanks Dan,
I managed to get a simultaneous output using a program called TVtool
which includes sthc called nview. After installing one of the nvidia
drivers and the tvtool, magically, I was on both of the screens at the
same time. I guess I need to run the tvtool and select the appropriate
buttons for that each time I turn the machine on. One more thing, I
seem to be stuck to the maksimum 800x600 monitor resolution with a low
color setting i think i can live with that.
--ali ziya

Strange. Maybe the single RAMDAC allows cloning the output to both devices
then. The GF4 and GF FX cards with dual RAMDACs allow 2 outputs to be
controlled independently, affectively allowing them to run as 2 different
cards (I use that on my GF4 Ti4200 using 1280x960@85Hz on my 19" monitor and
a dualview desktop on my TV using 800x600@60Hz).

Dan