when i plug 3 displays only 2 of them work !

[slimshady044]

hello
when i plug 3 displays only 2 of them work !
one of them is benq and the other is samsung and the third one is lg
whenever i unplug benq , samsung and lg work but benq doesn't i can only plug two !
my card is AMD Radeon HD 7900 Series

 

[Onus]

At least one of the displays must be using a DisplayPort connection, possibly with an Active adapter. Have you loaded the drivers for your card?

 

[bignastyid]

With the 7900 series you must use a the displayport for 3 or more monitors. If the monitor doesn't have displayport then you need to use an active displayport adapter.

 

[slimshady044]

At least one of the displays must be using a DisplayPort connection, possibly with an Active adapter. Have you loaded the drivers for your card?

2 displays using dvi
and the third hdmi
and what you mean by Have you loaded the drivers for your card

 

[slimshady044]

With the 7900 series you must use a the displayport for 3 or more monitors. If the monitor doesn't have displayport then you need to use an active displayport adapter.

for the benq i'm using hdmi and for the samsung i'm using dvi and the lg dvi also but it doesnt work untill i plug one of the 2 other displays
what i get from you that i cant use 2 dvi's and 1 hdmi i need to use one dvi and one hdmi and one display port !
will that one work ?http://www.amazon.com/Cable-Matters-Plated-DisplayPort-Adapter/dp/B00EDT01TO/ref=sr_1_2?ie=UTF8&qid=1429648594&sr=8-2&keywords=active+displayport+adapter

 

[bignastyid]

With the 7900 series you must use a the displayport for 3 or more monitors. If the monitor doesn't have displayport then you need to use an active displayport adapter.

for the benq i'm using hdmi and for the samsung i'm using dvi and the lg dvi also but it doesnt work untill i plug one of the 2 other displays
what i get from you that i cant use 2 dvi's and 1 hdmi i need to use one dvi and one hdmi and one display port !
will that one work ?http://www.amazon.com/Cable-Matters-Plated-DisplayPort-Adapter/dp/B00EDT01TO/ref=sr_1_2?ie=UTF8&qid=1429648594&sr=8-2&keywords=active+displayport+adapter

Yes that should work as its an active displayport adapter.

 

[Onus]

Yes, to use three displays, at least one of them must use DisplayPort. An adapter may be used, but it must be an Active adapter (not a Passive one).