Author Topic: Trident card doesn't output a picture unless hooked to a pc monitor? (Read 1078 times)

Popcorrin · « **on:** November 17, 2005, 12:06:02 am »

I am having a little trouble with my trident card. If it is hooked to a pc monitor when booted up it will output a picture. If it is not hooked to the monitor at boot up and the monitor is plugged in later it will not output a picture. Also when I hook it to my jpac it will not output a picture. I have to first hook it to my pc monitor and then after it boots up I can hook it to the jpac and it then outputs a picture.

I am assuming that it waits to initialize until it gets feedback from the monitor and in the case of an arcade monitor there is no feedback.

Is there a way to fool the card. I know that 4 of the wires on a vga connection are for monitor ID. Can anything be done with these to cause the card to initialize and output a picture without hooking it to a pc monitor?

Jess-- · « **Reply #1 on:** November 18, 2005, 10:33:36 am »

from memory one of those leads needs to go to ground to tell the card there is a monitor attached, used to get the same thing on cheapo servers I ran using S3 video cards, they used to refuse to boot with no monitor attached, I wound up linking the pin to ground on the card itself.

Popcorrin · « **Reply #2 on:** November 18, 2005, 04:56:27 pm »

I was hoping it would be something that simple. Now all I have to do is find the right lead.
Do I have to worry about grounding the wrong monitor ID wire?

Jess-- · « **Reply #3 on:** November 18, 2005, 05:00:19 pm »

I will have a look over my notes from the time and let you know what I found? can probably tell you which pin to gnd

Popcorrin · « **Reply #4 on:** November 18, 2005, 11:33:52 pm »

I would extremely appreciate it. Thanks!

Jess-- · « **Reply #5 on:** November 19, 2005, 07:04:46 am »

Hope this helps.

Pins / ID

4

Popcorrin · « **Reply #6 on:** November 19, 2005, 11:21:27 am »

Awesome, thanks!

This could also come in handy to prevent certain resolutions being displayed on monitors that can not handle it. I have an NEC monitor that certain pc games will try to send 1024x768 to, thus overdriving it.

Jess-- · « **Reply #7 on:** November 20, 2005, 06:22:54 am »

should say that these are old (seriously old) standards, but modern video cards should still look for it because of backwards compatibility

Popcorrin · « **Reply #8 on:** November 21, 2005, 12:25:36 am »

I tried grounding the wires and for whatever reason it didn't work. Looks like I will have to find another video card. Thanks for the info.


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Author Topic: Trident card doesn't output a picture unless hooked to a pc monitor? (Read 1078 times)

Popcorrin

Trident card doesn't output a picture unless hooked to a pc monitor?

Jess--

Re: Trident card doesn't output a picture unless hooked to a pc monitor?

Popcorrin

Re: Trident card doesn't output a picture unless hooked to a pc monitor?

Jess--

Re: Trident card doesn't output a picture unless hooked to a pc monitor?

Popcorrin

Re: Trident card doesn't output a picture unless hooked to a pc monitor?

Jess--

Re: Trident card doesn't output a picture unless hooked to a pc monitor?

Popcorrin

Re: Trident card doesn't output a picture unless hooked to a pc monitor?

Jess--

Re: Trident card doesn't output a picture unless hooked to a pc monitor?

Popcorrin

Re: Trident card doesn't output a picture unless hooked to a pc monitor?