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amd radon 6850 not detecting 3rd monitor

Last response: in Graphics & Displays
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February 9, 2012 4:26:32 PM

Hello,


I could use some help . I m trying to get a 3 -42" plasma monitor setup running . I temporary have radon 6850 running . This is a borrowed card. and will eventually go with 2- 6970's ..What is happening it only see 2 monitors in setup . My connections are 1st monitor - DVI to VGA . 2nd DVI to VGA and 3rd is Mini DP to VGA .

All 3 monitors are VGA .

My question is should the 6850 see all three 42" or is it too much for that one card ?

Do I have it hooked up correctly . ?

2nd question
February 9, 2012 4:40:25 PM

to have three or more monitors on one card you must buy whats called an active dongle look them up on the amd website
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a b C Monitor
February 9, 2012 5:14:43 PM

Hi revzillia,

Check your specific card but most 6850s have one DVI-I port and one DVI-D port. The DVI-D port will not work with a DVI->VGA adapter because it doesn't pass the analog signal like the DVI-I port does. You need to look at your specific card and its reference matieral to determine its exact display configurations.

If you want you can link the exact card's make and model and someone can tell you the exact configuration required for three monitors.

Since your monitors only accept VGA, depending on your card's ports, your best choice is probably:
1) DVI-I->VGA
2) Active MiniDP->VGA
3) Active MiniDP->VGA

The above assumes you have two miniDP ports.
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February 9, 2012 5:57:02 PM

larkspur said:
Hi revzillia,

Check your specific card but most 6850s have one DVI-I port and one DVI-D port. The DVI-D port will not work with a DVI->VGA adapter because it doesn't pass the analog signal like the DVI-I port does. You need to look at your specific card and its reference matieral to determine its exact display configurations.

If you want you can link the exact card's make and model and someone can tell you the exact configuration required for three monitors.

Since your monitors only accept VGA, depending on your card's ports, your best choice is probably:
1) DVI-I->VGA
2) Active MiniDP->VGA
3) Active MiniDP->VGA

The above assumes you have two miniDP ports.




Yes I think it does have 2 mini Dp ports ... Ok I'll try that tonight ......and I will forward the make and model .... ThX all
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a b C Monitor
February 9, 2012 6:15:35 PM

Also - since you are planning the same configuration using a couple 6970s: Check the configuration options and DP port sizes on the 6970s you are planning to buy (or have bought). My older 6970 (non-reference Asus directCU version) has full-sized DP ports (NOT miniDP). Most of the other ones I see being sold today use miniDP ports.

Since you are likely to be purchasing adapters, make sure you don't end up with a bunch of the wrong size DP adapters when you put in your 6970s. If you have yet to purchase your 6970s get the ones with miniDPs since miniDP seems to be the norm now (All the 7xxx series have them).
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February 9, 2012 11:31:22 PM

larkspur said:
Also - since you are planning the same configuration using a couple 6970s: Check the configuration options and DP port sizes on the 6970s you are planning to buy (or have bought). My older 6970 (non-reference Asus directCU version) has full-sized DP ports (NOT miniDP). Most of the other ones I see being sold today use miniDP ports.

Since you are likely to be purchasing adapters, make sure you don't end up with a bunch of the wrong size DP adapters when you put in your 6970s. If you have yet to purchase your 6970s get the ones with miniDPs since miniDP seems to be the norm now (All the 7xxx series have them).




Ok , Ill keep it in mind ... thx BTW I did get the 3rd monitor recognized but the resolution isn't correct on the 3rd monitor . No matter what I do it won't change . I need to look @it alittle closer ....jeff
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