Picture only visible in 1080p on 4k monitor

[InterGmoose]

Hello guys

To be honest i am very pissed off right now..

I have a Samsung 4k monitor, the U28D590D. When using displayport the picture is only visible in 1080p. As soon as i choose 3840x2160 as my resolution the screen turns black, no visible picture what so ever.

I read something online about some cables being reduced bit rate, which only allows them a maximum resolution of 1080p, so I bought TWO other cables, botch displayport 1.2. And none of them work.

If I use HDMI, i can use 4k resolution, but to a reduced 30hz, which is unacceptable. So i dont think the screen is broken.

My graphics card is the XFX R7 260x.

Both the screen and the card should support 4k 60hz using displayport. But what am I doing wrong? Please help!

 

[sincreator]

Have you tried 4096x2160? http://www.techradar.com/news/television/ultra-hd-everything-you-need-to-know-about-4k-tv-1048954#null The resolution you are trying to run is actually only Ultra HD 3840x2160.

Looking at the specs for the 260x it shows 4096x2160(actual 4k) as the max resolution.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150688

 

[pauls3743]

Have you went into the menu on your screen and enabled 1.2? I had to do it on my ASUS PB287Q.

Another thing worth noting is that my screen doesn't always switch on when I boot my computer. I sometimes have to completely power down my system, switch off at the socket and then power it back up. Most times I get away with just rebooting my pc.

 

[InterGmoose]

Have you tried 4096x2160? http://www.techradar.com/news/television/ultra-hd-everything-you-need-to-know-about-4k-tv-1048954#null The resolution you are trying to run is actually only Ultra HD 3840x2160.

Looking at the specs for the 260x it shows 4096x2160(actual 4k) as the max resolution.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150688

Yes, i know that. But the screen itselft supports only 3840x2160, which the card also supports. Still I dont know where the fault is..

 

[InterGmoose]

Have you went into the menu on your screen and enabled 1.2? I had to do it on my ASUS PB287Q.

Another thing worth noting is that my screen doesn't always switch on when I boot my computer. I sometimes have to completely power down my system, switch off at the socket and then power it back up. Most times I get away with just rebooting my pc.

This i haven't even considered. Because when i disconect the hdmi, and select the displayport as the source the screen first starts grey, then changes to the black as when the screen is turned off..And on the monitor itself, all I can see is the option to change from PC/AV on the different ports.

But I can try your tips, thank you my friend



I have now tried everything, nothing works...I have reinstalled the drivers, done all of the above you mentioned, reinstalled the drivers for the screen..What to do? Is it possible that either the card or the screen is broken?

 

[blacksheep123]

your card can run at 4k but i doubt you can squeeze 60fps from a Bonaire architecture chipset... try a 270x or higher

 

[InterGmoose]

your card can run at 4k but i doubt you can squeeze 60fps from a Bonaire architecture chipset... try a 270x or higher

And I am not trying to do it, I use it only for the extra space when using visual studio, photoshop and so on. Its also not on topic. This computer isn'n meant to run games.

 

[Ulrik M]

Hey

I had the exact same problem as you have. I managed to fix it by going to my screen option (pressing the buttons on the screen) and browse all the catagories until i found a setting for displayport 1.1 and 1.2. Someone already suggested that it should be DP 1.2 - which didn't work.

However when i tried DP 1.1 my screen started working!

I have no idea why it works, but it somehow does.

 

[blacksheep123]

your card can run at 4k but i doubt you can squeeze 60fps from a Bonaire architecture chipset... try a 270x or higher

And I am not trying to do it, I use it only for the extra space when using visual studio, photoshop and so on. Its also not on topic. This computer isn'n meant to run games.

but you mentioned 60hz.. i thought you were expecting 60hz