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EAH5850 - Can't extend display to 3rd monitor?

Last response: in Graphics & Displays
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November 29, 2011 12:15:21 AM

I recently bought another 2 monitors to achieve a 3 monitor setup. I had a dual monitor setup for the longest time between an HDMI and DVI port. I bought a display port to HDMI converter and plugged it into my 3rd monitor. I tried to extend the display onto the 3rd monitor and it did not work.

I have 2 HP 2311 23" Monitors and 1 Dell ST2220M 21" Monitor, all of them reach up to 1920x1080 in resolution.

When trying to extend the display to the 3rd monitor in the "Screen Resolution" screen through Windows, it comes up with the error message "Unable to save display settings." I then tried to do it through AMD's VISION Engine Control Center and when I attempt to extend the display to the 3rd monitor, it comes up with the error message, "To extend the desktop, a desktop or display must be disabled." and gives me the 2 options to "Continue" or "Cancel". If I do indeed continue, I just disable one of the two monitors already connected, and it just swaps places with the 3rd monitor. Basically, the 3rd monitor works perfectly fine, but I am only allowed 2 monitors to be used at one time.

I have also updated my drivers, but nothing has changed.

Any suggestions?
November 29, 2011 12:33:00 AM

You have to make sure that your adapter is an active displayport adapter not a passive one, otherwise you'll only be able to get two displays on at the same time.
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November 29, 2011 12:51:23 AM

Is there a possible way to check? I bought it in a small box that doesn't contain any information on whether or not it is active or passive.
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November 29, 2011 12:54:45 AM

how much did you pay for it???

actually the passive would not say passive.....

only the active would say active.....

so with that logic in mind...most likely you have the wrong one.....

here is a link to what you need

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

good luck

bTx


HOWEVER....

im not positive but this may only be for EYEFINITY,,,, can you try the same method but this time from the windows7 control panel ???
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November 29, 2011 1:54:40 AM

badtaylorx said:
how much did you pay for it???

actually the passive would not say passive.....

only the active would say active.....

so with that logic in mind...most likely you have the wrong one.....

here is a link to what you need

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

good luck

bTx


HOWEVER....

im not positive but this may only be for EYEFINITY,,,, can you try the same method but this time from the windows7 control panel ???


I did try it from the Windows 7 control panel, but thank you for your advice on the adapter, I will try it out
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