Why cant I get 3 monitors working with my ati 5770

Question

I have an ati 5770, card with vga, dvi and hdmi output. I can only get 2 out of the 3 monitors working at once, however i can change the configuation so that all monitors can be selected, but only 2 will work at once.. 2 of my monitors have dvi inputs and one has vga. in my catyalist control center it shows all 3 monitors are there but either 2 can be selected at a time, and so the same with my windows 7. I have and adapter which i use on the 3rd monitor, hdmi-dvi adaptor and it works. also when i boot up my pc i get 2 monitors booting up and when windows starts the 3rd monitor boots but the 1st one closes. I looked at my package box and it actualy does specify ati eyefinity technology is available with this card.

why wont it work???

Solution

At the bottom of this ATI support page it states that for more than two monitors, the additions displays need DisplayPort connectors.

Comments

[ardavey]

Possible duplicate: superuser.com/questions/66665/…

[MDMarra]

@G-Dogg - No, that adapter is going the wrong way. You need a DVI to DisplayPort, or an HDMI to DisplayPort. That device is a DisplayPort to DVI, which won't get you anywhere. Also, your third monitor needs DisplayPort as an input type, which you did not list meaning you will have to get another adapter which will kill the quality, or get a new monitor.

[Admin]

thanx MarkM, if you know of any can u provide a link.. thanx

[Admin]

back again and reading some more reivews the dp needs to be active.. ttp://www.techpowerup.com/110927/SAPPHIRE_Solves_Eyefinity_I‌​ssue_with_Active_Dis‌​playPort_Adapter.htm‌​l

[bobobobo]

Also note, DISPLAYPORT AT BOTH ENDS. You cannot use a DisplayPort-DVI adapter and make it work, I just tried.

[bobobobo]

REQUIRED: DISPLAYPORT AT BOTH ENDS, (GPU end AND monitor end). Conversion does not work.