Author Topic: Dual Monitor Setup Fails.  (Read 3918 times)

Offline WARP-10

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Dual Monitor Setup Fails.
« on: January 23, 2010, 03:20:14 AM »
I use two monitors, both 15 inch CRT's at 800x600 on an Optiplex GX260, XP Pro.

My primary monitor is on the integrated video card:

Intel(R) 82845G/GL/GE/PE/GV Graphics Controller

My secondary monitor is my PCI video card:

NVIDIA GeForce4 MX 440 with AGP8X

Two days ago I unplugged the monitor on the GeForce so I could use it for a couple hours on another comp.

During that time this one was also rebooted without the GeForce monitor plugged in and the remaining monitor worked normally on the INTEL.

So I get done with the other comp and plug that monitor back into the GeForce and now for some reason it isn't working.  :'(

There are no yellow question marks or red exclamation points in the Device Manager and Under Display Adapters both video cards show "This device is working properly."

I put the monitor in question back on the other box and it functions normally.

I've been through all the display settings and in the NVIDIA control panel and every thing is still normal there.

So, I'm at a loss on this one.

Offline WARP-10

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Re: Dual Monitor Setup Fails.
« Reply #1 on: January 23, 2010, 04:54:10 AM »
Ah ha, I found the boogeyman.

nView Display Settings/Single display

uncheckmark TV and checkmark my other monitor (Compaq F57600)

boom, other monitor suddenly comes to life.

What would have switched that to TV?

Offline PCBruiser

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Re: Dual Monitor Setup Fails.
« Reply #2 on: January 23, 2010, 08:12:55 AM »
When you unplugged the second monitor, there was no longer any monitor on the second output.  When that happens, the card sets the second monitor channel to its' default value, in this case TV.
Don't Read?  Can't learn!

Offline WARP-10

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Re: Dual Monitor Setup Fails.
« Reply #3 on: January 23, 2010, 09:42:03 AM »
When you unplugged the second monitor, there was no longer any monitor on the second output.  When that happens, the card sets the second monitor channel to its' default value, in this case TV.

So it auto switched from putting out on the monitor port to that s-video port. I haven't unplugged these two monitors since using them so that's a new one on me.

The s-video/audio/video plugs off of my security camera will let me run my desktop off of the GeForce on the TV but its trash and no resolution settings will make it usable.

What amazes me is that the two video cards communicate with one another because I can flip flop and swap out or move anything I want from monitor to monitor so that means it's switching video card pathways.

It's worked perfectly so far.