Crossover screen resolutions issue

[gamerguy2]

http://www.amazon.com/CROSSOVER-27QW.../dp/B00EZMDOOI

I bought this screen. I cannot change the resolution to the full resolution of 2560x1440.
Using DVI - dual (I am using the correct DVI-D adapter) it will not allow me to change the resolution at all. It is stuck at 640x420.
When using HDMI it is stuck at 1080p (1920x1080).

I reinstalled ccc (using a 5850 card). The ccc will not launch with this screen connected. Any ideas? Its very new and googling this "crossover lcd resolution issues and compatibility" provided no answers. I found one thread with the same problem but no real solution.

Anyone know a fix for these new 27" Korean IPS screens? Or is my 5850 ATI simply not compatible.

 

[Black Octagon]

Wait, WHAT adapter are you using and why? Do you not have a free DL-DVI port on your card? Simple cable without adapter is the ideal setup you should be aiming for.

1080p max over the iteration of HDMI that your card has is normal

 

[gamerguy2]

I think my Windows needs to be reinstalled. On my spare pc the ccc is working. I tested the monitor on the spare pc and was able to increase the resolution through HDMI. Its been a few (3-4) years and a few errors are showing up since my last Windows install.

 

[KingFatty]

You should not be using an adapter.

You should not be using HDMI.

Try using a single cable, directly connected to the 5850 and directly connected to the video card. Make sure your particular flavor of 5850 has at least one dual link DVI port, and use that dual link DVI port for plugging the cable into. And make sure the cable you are using is dual link DVI cable.

 

[gamerguy2]

I am finding a few more threads about this. I was able to through the DVI to bring the resolution to 1080p (yes 1080p through the DVI).

My GFX is a PowerColor 5850. I checked out the specks it has 2 DVI connectors (says it supports DVI-D on the manufacturers website) in the back. I tried both. Still having a few problems maxing the resolution at 2560x1440. Cleaned out a boatload of drivers from my system (ccc still will not launch even after changing compatability mode to Windows 7 ). Could be Windows, but I read a display port adapter will also work.

I was looking at a Display port HDMI cable to connect this. Or should I try something else?

 

[gamerguy2]

It turns out the Videocard has DVI-I female connectors only. The motherboard has DVI-D (bought this year).

The Video card does not match the Crossover port;

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The Motherboard matches the Crossover port;

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So I assume I can use the full resolution through the MB but not the GPU (this will not give me the game and video capabilities of the 5850 ).

Will a HDMI displayport adapter work? My regular HDMI cable maxes out at 1080p.

 

[KingFatty]

Do you know what kind of DVI cable you have? Are you sure it supports dual link connections? Where did you get your DVI cable from?

Whether the connector is dual link is a separate issue whether it's DVI-D or DVI-I:

Which of the various types of Powercolor 5850s do you have? I think they made at least three different types, so if you identify it I can see if I can find which DVI port supports dual link (maybe both so it's a non-issue). They might have a model number or specific style of cooler (maybe a sticker). But even if you verify the video card port supports dual link, you will still be out of luck if your DVI cable does not support dual link.

 

[gamerguy2]

I have the bottom GFX card. Both of the back connector ports on the GFX card are DVI-I Dual Link.

The cable they sent with the monitor is correct. It is a DVI-D Dual Link.

 

[Black Octagon]

OP, no offense but you need to try harder to respond to the specific replies we are giving you.

Wait, WHAT adapter are you using and why? Do you not have a free DL-DVI port on your card?

You have not answered the first question. We are still trying to figure out the answer to the second question.

It turns out the Videocard has DVI-I female connectors only. The motherboard has DVI-D (bought this year).

The Video card does not match the Crossover port;

This is not relevant. What matters - as we already said - is whether the DVI port(s) is/are Dual Link. There is more to this than counting the number of pins, unfortunately...

Will a HDMI displayport adapter work? My regular HDMI cable maxes out at 1080p.

I already told you that HDMI will NOT get you above 1080p

Do you know what kind of DVI cable you have? Are you sure it supports dual link connections? Where did you get your DVI cable from?

Which of the various types of Powercolor 5850s do you have? I think they made at least three different types, so if you identify it I can see if I can find which DVI port supports dual link (maybe both so it's a non-issue). They might have a model number or specific style of cooler (maybe a sticker). But even if you verify the video card port supports dual link, you will still be out of luck if your DVI cable does not support dual link.

You really need to answer these questions, ESPECIALLY the one about your SPECIFIC card model. "I have the bottom GFX card" does not cut it.

I cannot speak for others, but when people create support threads like this, and then fail to properly act on the advice given, I very quickly lose patience and interest in helping the person.

ALL we need to verify at this stage is whether your graphics card is sending video signal out of a dual link DVI port, through a dual link DVI cable. Nothing else matters. Not drivers, not Windows installations, and certainly not use of adapters.

 

[gamerguy2]

Thanks for the help Black Octagon.

I thought I already answered the questions;

1) The connector on the Video Card is Dual link DVI-I. I checked the schematics through google. I am not using an adapter. My terminology was wrong.
2) The cable is the correct cable. A Dual link DVI-D cable.
3) The video card is Powercolor PCS+ 5850. It has 2 Dual Link DVI-I connectors and an HDMI and a displayport connector.( Crossover monitor has only Dual Link DVI-D and HDMI connector. No displayport)



http://hothardware.com/Reviews/PowerColor-Radeon-HD-5870-and-5850-PCS/

Those are the specs of the video card from HotHardware.

(Reinstalled Windows all AMD software working correctly)

I realize now HDMI will give only 1080p. The DL-DVI-I also maxes out at 1080p. A question if you have the time is;

Is there a way to display the full 2560x1440 resolution through my current monitor and video card without upgrading the video card? ( Not going to monkey with custom resolution settings using a DVI cable. Monitor looks great at 1080p with HDMI.)

Merry Christmas, Happy New Year and all the rest

 

[KingFatty]

I'd suggest trying all combinations you are able to re-arrange. For example, shut down the computer, disconnect the cable from the DVI port, and then connect it to the other one, and then turn on the computer and see if that works.

Also, I believe the various vendors of 1440p displays will list the 5850 as incompatible, HOWEVER, I believe that is only for the BIOS bootup. Once you get to windows and loading the software driver, it should be able to work fine at that point.

Maybe your computer is getting stuck at the BIOS bootup screen and somehow locking the video card to the 1080p resolution even in windows? Can you try other techniques to get the computer into windows while the display is disconnected from the 5850, and then connect them after windows is loaded (e.g., use the motherboard video connection to boot into windows, then swap the cable)?

Also, try moving the 5850 to a different PCIe slot, if you have one.

But ultimately, this may be a silly issue such as a cheapo DVI cable. Maybe if you had access to another system with a 1440p monitor that worked, you could use that system to test your cable. But before buying a new video card, I'd suggest trying a substitute cable that is verified to work with dual link. Maybe your bought a scam cable that is advertised to work with 1440p, but really is just a cheap re-package scam to sell regular cables that happen to have the correct ports on the end, but lacks the signaling cables inside to actually work?

 

[gamerguy2]

KingFatty I will try that. My old screen can connect to load Windows then I can connect the DVI cable to the new Monitor. No crossfire capabilities on this board. I read the manufacturer information and it said that "Some user modification may be needed on 5850 PCS+ to achieve above 1900x1200 resolution."

The AMD Vision Center shows that the Monitor maximum resolution is 2560x1440 and refresh 67 hz. My only worry is that it is a faulty monitor. I believe it is not (it came straight from Korea and UPS sent me a letter Tuesday saying I owe them $19.50 for customs not paid on the monitor lol). I will pay UPS the customs money. The IPS screen is a big upgrade from my TN panel and so far no lag or noticeable loss of fps in my favorite games. The cable is less important. I tried another DL-DVI cable it did not increase the resolution. The other pc I own does have crossfire. If I have any more time I'll try it again on the other computer which has crossfire capabilities.