Samsung KS8000 65" won't display 3840x2160 at 60hz, only 30hz

[bigcheese53]

Hello, I cannot get my TV to display my PC at 4K with 60hz. I just upgraded to a NVIDIA GTX 1060, and bought a new 6ft HDMI cable which supposedly is 18gbps and should be able to display this. If I force the refresh rate to 60hz on the NVIDIA app my display fails. Any ideas?

This is the HDMI cable I'm using:
https://www.amazon.com/dp/B014I8SSD0/

 

[PC-4LIFE]

You can create a custom resolution which has 60 Hz at that resolution. Do this from the NVIDIA control panel.

 

[bigcheese53]

You can create a custom resolution which has 60 Hz at that resolution. Do this from the NVIDIA control panel.

Thanks for your reply. I have tried this, but the display fails. I'm doing this from the NVIDIA control panel. Reviewing what I can find about the TV, the video card, the HDMI cable, all should be capable of delivering this resolution at this frame rate. Any other ideas?

 

[PC-4LIFE]

You can create a custom resolution which has 60 Hz at that resolution. Do this from the NVIDIA control panel.

Thanks for your reply. I have tried this, but the display fails. I'm doing this from the NVIDIA control panel. Reviewing what I can find about the TV, the video card, the HDMI cable, all should be capable of delivering this resolution at this frame rate. Any other ideas?

Try something a little lower than 60Hz, like 50 or 55.

 

[bigcheese53]

You can create a custom resolution which has 60 Hz at that resolution. Do this from the NVIDIA control panel.

Thanks for your reply. I have tried this, but the display fails. I'm doing this from the NVIDIA control panel. Reviewing what I can find about the TV, the video card, the HDMI cable, all should be capable of delivering this resolution at this frame rate. Any other ideas?

Try something a little lower than 60Hz, like 50 or 55.

I've tried 50hz and 59hz which are the only other options between 30hz and 60hz, but still not working. I tried changing from RGB mode to 4:4:2 and 4:4:4 which are the only other options but still display doesn't work. It only will work at 4K at 30hz, the only 60hz I can get it to work at is at 1080p resolution

 

[bigcheese53]

I bought another HDMI cable (5th one I've tried), 3 feet long, and it works now. The last one I tried was listed as 18gbps capable of 4k at 60hz etc at 6 feet length but clearly that was not accurate. I'm not sure if it's the length or the cable to be honest.
Here is the link to the one I bought that works:
https://www.amazon.com/gp/product/B01CRA4L9G/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1