Help: DisplayPorts not working

[cybernick]

Help: My monitors cannot detect the displayport outputs from my graphics card.

I have a Gigabyte HD 7850 graphics card (1 DVI, 1 HDMI & 2 mini-DP), using the latest AMD catalyst software.

I bought 4 Dell u2312hm monitors (each has vga, dvi & DP).

The DVI & HDMI (using a hdmi to DVI cable) outputs work, but NOT the 2 mini-DP to DP outputs.

I have set the input source on the 2 monitors from auto to displayport but they still don't work.

I have also tried restarting the computer with only the displayport monitors plugged in, still cannot detect the displays.

Additional info: I don't think it is a cable problem as I got my 2 mini-DP to DP cables from different suppliers. Unless both are faulty?

Any advice on how to get my displays detected?

 

[cybernick]

Ok, I found out that the monitors entered into power save mode when a DP cable is plugged in. When there is no DP cable plugged in, it will say that no DP cable.

So technically, the monitor can detect the cable, just that it is in power save mode.

Need help.

 

[commach]

http://deluxeforums.hardwarezone.co...layport-not-working-dell-u2312hm-4467697.html

 

[cybernick]

Yes, I've read that forum, I have selected the input on the monitors to displayport, but it doesn't work.

 

[MacClipper]

Possibly bad Displayport cables

Certified DP cables list
Products Database | DisplayPort

 

[cybernick]

Possibly bad Displayport cables

Certified DP cables list
Products Database | DisplayPort

Any idea where I can get good working ones?

I read about the possible 20-pin power problem on some cables. One of my cable is feeding out power, but not the other cable. So shouldn't be at least 1 of my cables be working?

 

[MacClipper]

What brand/model are your cables?

From the list and web feedback, seems Accell and Belkin are among the safer brands to go for.

 

[cybernick]

they are generic ones.

 

[cybernick]

What brand/model are your cables?

From the list and web feedback, seems Accell and Belkin are among the safer brands to go for.

Where can I get those cables?

Is it possible that my graphics card displayport is faulty instead?

 

[cybernick]

update: I managed to get 3 screens to work.
The cables work fine.
Figured out that 1 of the mini-displayports on my graphics card is spoilt, i'll be returning it & getting another card.