Originally Posted by evensen007
From everything I've read on forums and service bulletins from NEC (http://www.necdisplay.com/documents/Miscellaneous/DisplayPort_Notice.pdf
) regarding displayport cables and their monitors (as well as other manufacturers) is that most DP cables that are sold on the market are not true DP spec cables. For some reason, there is no gold standard like there is with USB and HDMI, and it allows a LOT of wiggle room for any manufacturer out there to put out a non-spec'd cable that will cause this problem. Believe it or not, I had the problem with the cable that Samsung shipped with their own monitor! When I got my new video card I had to use a different cable and the problem has disappeared (Went from full-sized DP connectors on my 5870 to mini dp on the 7970). I believe Samsung is shipping DP cables that are terribly out of spec and are losing signal. You can either buy a dp->mini dp adapter like this one: http://www.amazon.com/gp/product/B002BWSIK4/ref=cm_cr_asin_lnk
or you can buy a high quality dp->mini dp cable that has been reviewed and doesn't have the problem. The one I am using is: http://www.amazon.com/gp/product/B004065DAC/ref=oh_o02_s00_i01_details
Hope this helps all the "lost connection/wrong resolution" people.
Hey thanks for the reply.
Actually that Accell cable is the exact one I have currently that I am using with my HD 7970. I bought it at the same time I bought the monitor because I had a GTX 590 at that point, and that was the only way to connect it and get 120Hz. I read about issues using dp-> minidp adapters, so I wanted to get a solid cable.
After so many problems with the GTX 590 (because minidp is a secondary connection on that card and caused issues with SLI), I got an HD 5870, and tried using the stock DP cable that came with the monitor since it had full dp. I got the same problems, but MUCH less frequent than with the GTX 590. So I figured it was an Nvidia thing since these monitors seem to favor ATI cards from what I read, and what a Samsung rep had told me over the phone when I was trying to troubleshoot. So at that point, I decided to get a newer model card for cheap to test it out, and I ended up getting an HD 6950 and tried using the Accell cable with it, and had the same thing as with the HD 5870 but a bit less frequent.
So I finally bit the bullet, sold those cards, and bought an HD 7970 which I am very happy with, but I still get the problem, however it is much less frequent now than with the other cards.
Is there a specific minidp port I should use on the HD 7970? I just connected to the minidp port that was closest to the edge of the card. I figured they are all the same.
One thing I notice is that the base gets fairly warm, but the fan is spinning at all times. I thought maybe the internals in the base were overheating or something? Or maybe dp is just pure fail? Idk lol.