• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Eyefinity frustrating.com

Santiago

Santiago

Santiago

Associate
Joined
12 Mar 2011
Posts
16
Guys can someone help out here. I have the 6950 2gb (Gigabyte brand)
3 Samsung 22inch dvi /vga monitors.

OK here goes

I have a dvi cable from the top dvi port to the dvi port on one monitor
A DVI cable from the second DVI port (this cable has a vga connector built in at the other end) connected to the VGA port on another monitor.
The third is connected via minidisplay port to dvi adapter (active) to dvi port on the monitor.

I can only get two screens to fire up, if I unplug any one of the monitos, the other one fires up.

I'm suspecting its the cable with DVI one end and VGA on the other.

Any suggestions?
 
it could be but i suspect the active displayport adaptor is the problem, what make is it, i bought the one from ocuk and works perfect
 
Hmm, I thought it may be too. No brand on the adapter.

Do not post competitor links This is the link, It's a Spanish site as I live in Spain. Heres the product translation below.

Also I'm a complete noob to this but he monitor running off that adapter is working fine.

The new MacBook, MacBook Pro and MacBook Air each have a Mini DisplayPort that allows you to connect an external monitor or projector using an adapter. You can use an external display as main workspace or to extend your desktop or set it in mirrored mode with a projector so you can view what you are watching your audience.

Use the Mini DisplayPort to DVI to connect a monitor with DVI connection.

• Mini DisplayPort adapter DVI-D male to female.
• adapter compact hose 12 cm.
• It feeds on itself Mini DisplayPort connector.
• Supports HDTV resolutions up to 1080p.
• Supports 225 MHz / 2.25 Gbps per channel HDMI (6.75 Gbps to all channels).
• Compatible with 12-bit color depth per channel (36-bit for all channels).
 
OK I just looked at my desktop settings, and I can detect the other monitor although it doesn't recognise what it is and it doesn't give me the option to change the resolution. It gives me the option to extend the display to that screen however when I do this it does not work. It does say however it is connected by VGA. Do you guys think that this may be the VGA portion of the cable causing me problems?
 
i still think its the adaptor, theres no mention of eyefinity support, when you go to desktop settings try to create group 3x1 and see what happens
 
it could be the DP to DVi. i did some reading up and found there seemed to be a lot of issues with them, although most of them concerned were passive adaptors.

i used a DP to VGA cable - found on the bay
HDMI - DVI cable
and a DVI one on my my 3rd

and they worked on my 5770
 
thegooner84 said:
my dp-vga one is the same only supports up to certain resolution. doesn matter as im only using 3 17" monitors the now.

have you tried dropping your resolutions right down ?
Click to expand...

I tried that but no joy, windows control centre can see all three monitors and labels the 3rd one (the one I@m trying to get to work) as display on VGA

The one hooked up through the display port adapter is fine. I'm new to this if you hadn't guessed but if there was a problem with the adapter would the monitor work?

Thanks in advance
 
That is NOT an active display port adaptor - that is your problem mate

Buy one that says "active display port adaptor" like the OCUK one. I have it and am running an Eyefinity group as I type
 
BaDBoY_uK said:
That is NOT an active display port adaptor - that is your problem mate

Buy one that says "active display port adaptor" like the OCUK one. I have it and am running an Eyefinity group as I type
Click to expand...

Hey BaDBoY thanks for that, just for reference, how can you tell if it is active or not?
 
There seems to be a ton of confusion around here about 1) what is required for eyefinity, 2) what an active adapter is, and 3) the difference between active and passive adapters. I am making this thread, hopefully to clear that confusion.

1) Eyefinity requires an ACTIVE adapter to enable a third monitor on HD 5000 cards. Passive will NOT work, except for the first two monitors on the eyefinity 5 and eyefinity 6 cards. For the other three/four monitors, active is still required. A quick explanation of why is because DVI/HDMI requires a special clock, which the card is only able to provide two of. Displayport does not use this clock, so ATI used it as a workaround.

2) An active adapter converts a true displayport signal into DVI/HDMI/VGA/whatever else. It will have either a converter chip or a DAC built in to do said conversion. Contrary to popular belief, they do not need to have a usb power connection, in fact there are many that do not.

3) This is the big one I have been seeing a lot lately. The difference between active and passive is simple.
Passive adapters are merely a cable to go from displayport to DVI/HDMI/VGA/w.e. The video card detects the monitor as such, and outputs the required signal (DVI/HDMI/VGA). This does require one of the two aformentioned clocks, hence why they do not work with eyefinity cards.
Active adapters, on the other hand recieve a displayport signal from the video card, and convert it to DVI/HDMI/VGA. They will always have some sort of onboard DAC or video converter chip which they use to convert the dp signal. Lately, most everyone has been referring the DAC ones (which are the converters that go DP->VGA) as 'passive.' This is not the case.
Click to expand...
 
You must log in or register to reply here.
Back
Top Bottom