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Can't set dual monitor.

Last response: in Graphics & Displays
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May 2, 2009 6:11:59 PM

Here's my problem:

i get into ATI catalyst control center, either advanced or easy setup, when i try to set adual monitor interface... well i neeed two displys, which i have: my tv and my screen. But i just cant set them up at the same time. There are two little boxes where you're supossed to drop the tv's or the screen's image and they will work in a dual monitor setup.

Box #2 is not available, it just shows up itself as gray and nothing can be done. If i click the second screen on the dual setup it asks me if i want to enable it, if i click yes my main screen just goes black for a second or 2 and then nothing happens again.

At desktop > Properties its just the same, i click enable secondary device and the screen flashes black and the "enable secondary device" box unchecks again on its own.

I really want to do this dual monitor setup as i like to watch videos or play videogames at the tv while i chat or work at my main screen. Thats something that at least i could do with my old laptop.

For further detail:
ATI HD2600PRO 256mb ddr3
TV via S-Video
Monitor via DVI adapted to VGA
Catalsy driver version: 8.591.0.0
Catalyst control center version: 2009.0225.1546.28221

Please if you need more info and are willing to help me ill give it all out if i hadnt already. Thanks to those who at least read it :) 

Almost forgot: Also tried with ultramon, results: nothing.

More about : set dual monitor

May 2, 2009 6:24:30 PM

What type of cables are you using? Is the tv on and set to the right input before you try enabling the display. I run a three monitor setup. The steps you are going thru seem correct but if the card cant detect the display then it wont enable.
May 2, 2009 6:53:27 PM

AdioKIP said:
What type of cables are you using? Is the tv on and set to the right input before you try enabling the display. I run a three monitor setup. The steps you are going thru seem correct but if the card cant detect the display then it wont enable.


The monitor is connected with a dvi to VGA adapter to the dvi port
The tv is connected in the S-Video port with a S-Video to RCA cable.

Both screens are dettected and i can even do quick screen switch with a short cut i made for this. I do play games at my Tv and watch videos, but i can not use both displys at the same time, I've got no ideas left on what to do.
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May 2, 2009 10:46:23 PM

Does your TV have any other type of input besides S-Video. I beleive that may be part of your problem. I seem to vaguely remember something about the S-Video port not being the same as the two plug on the card (DVI/VGA/HDMI). Try switching the monitor to the other plug then trying the S-video at the same time. If your tv has any other input besides S-Video then use that...
May 3, 2009 2:32:50 AM

S-video and RCA kind cables are analog.
Vga outputs are digital.

i dont know if that is something to worry about, but it shouldnt as the card supports boths very well.

My TV is pretty old, it doesnt even have an S-Video cable, The s-video cable is connected to the video card, but it has an adapter to RCA connector

AdioKIP said:
Try switching the monitor to the other plug then trying the S-video at the same time.


Sorry, i dont get what you're trying to say :( 
!