View Full Version : Freakin Tv Out on a Geforce2Go
10th April 2002, 12:34 AM
I have a consistent battle with my SVHS out on my laptop. I'm using a Dell 8100 with a Geforce2go card with tVout.
I want it to --
A) ALWAYS OUTPUT AN SVHS SIGNAL
Irregardless of whether I have something currently "detected" or not.
B) Output in Overscan
For the life of me, I can't figure out what the purpose of having a port disabled is...
An example of this behaviour completely screwing me over is if you want to hook up a vcr and your laptop into a simple manual switcher. When the switch is not on the laptop, as far as the Geforce2go is concerned, you don't have a tvout.
I even bought a registration for TVTool, but after trying to use it, it seems to alternately put my LCD screen in an unrecognized refresh rate or something.
I just want a simple, elegant solution to this problem.
Is there a way to edit my registry settings to always set the output of the SVHS port to ON and the mode to overscan?
I'll post a nice fresh loop for the person who can solve my problem.
10th April 2002, 02:51 PM
Well i the problem with the continous video output is that most vga > video chipsets used on videocards and in notebooks (chrontel and philips) need to see a device connected before they enable you to allow to use the tv out. But this is plain load sensing and the chipset needs to see some resitence (probably the wrong word... sorry, i am dutch not english...)
The second thing is tvtool. It is a great little programma, but is doesn't support dual view. It tries to do something called dual view, but what it actually does is set the refresh rate of the primary and the secondary display to the same level. And that is impossible with an lcd panel because an lcd uses a fixed refresh rate. So it is a nice tool to remove black borders but i can't use it on any of my laptops.
11th March 2003, 08:24 AM
I know the trouble and not only lappy's have the problem. Our way of solving it is to hook the tv-out trough a VCR, so the computer "thinks" it is giving output (how to fool your computer, lesson one :))
11th March 2003, 01:42 PM
get a video mixer? =] (or, really just an active svid switcher will work too)
Overscan you just won't get with your geforce2go, I'm sorry. I've seen radeon 9000 upgrades for sale on ebay, though I'm still not sure if they replace the tv out chip. Scan converters are your friend.
11th March 2003, 03:45 PM
murph and psychodude, I think you underestimate the issue at hand here. I have the same issue with my Radeon 7500. If I boot up without the S-Video plugged in , I have to go to the damned control panel to enable the video. I mean why can't a signal just always be present? I think KF's issues are more severe than just "getting a video mixer" or "plugging into a VCR".
11th March 2003, 05:03 PM
You could probably make a cable with a resistor or something that fools it to thinking there is a source connected, I suspect this stuff is built into the encoder ship so I dont hold out much hope of a software fix (would like to be wrong though)
I only tried TV toolr ecently and was dissapointed, its fallen behind nVidias features too much and makes it incompatible with many of the never possibilities for multi-screen setups that nVidia now provide.
So sadly I conclude that scanconverter is still as essential as ever for decent results :(
11th March 2003, 05:40 PM
Originally posted by burstingfist
murph and psychodude, I think you underestimate the issue at hand here. I have the same issue with my Radeon 7500. If I boot up without the S-Video plugged in , I have to go to the damned control panel to enable the video.
I have to do the same thing on my 8200 and the vga out. Is it that hard? it's like 4 clicks.
12th March 2003, 07:22 AM
4 clicks don't get you a clip my friend. ;)
I'll admit it isn't that big a deal... and I have both a scan-converter and a Mixer...
I actually bought a new scan-converter and it has been behaving much more pleasantly than my old one.
My biggest annoyance with the secondary output issue was that if I was running a show and my computer crashed, then I would have to basically do the entire boot up and fussing about with it up on screen. If there was a reg key way to just override, I would just leave it up and going. It also seems to me if the thing is autodetecting a connection, then perhaps it is wasting cycles on that autodetection process. The whole thing seems counterintuitive to me. I mean if you want a second screen output, just turn it on or off with a software switch. My solution ended up being patching my output to the input of my capture device, which served as an active connection and allowed me to add the second screen. That way, I could boot up the projector with something other than a gui showing. I guess I'm just enough of a video guy that I figure an output should always be active, not flipping on and off based on what's plugged into it.
12th March 2003, 10:06 AM
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