DP-HDMI not working in 4K@60Hz


#1

Hi,

I have a 40in TV using as monitor (Samsung MU6300) and my graphic card is Nvidia GTX 770, which does not have HDMI 2.0. So I am using DP-HDMI adapter from plugable and it shows 4k with 4:4:4 good but only in 30Hz. In Nvidia control panel it doesn’t show my 60Hz choice. (Previously it shows if I connect hdmi-hdmi direct, but I loose the 4:4:4). My TV’s HDMI UHD color is enabled on all 3 HDMI ports) and the source is set to PC. So I can’t figure out what else I’m missing to get 4k@60hz with 4:4:4. !](https://d2r1vs3d9006ap.cloudfront.net/s3_images/1719037/Capture_inline.JPG?1522031814)](https://d2r1vs3d9006ap.cloudfront.net/s3_images/1719037/Capture.JPG?1522031814)


#2

Hello Patrick, thanks for posting! Can you let us know the bpc setting that is set within your graphics properties? HDMI 2.0 can only carry a 4:4:4 4K@60Hz signal at “8bpc” so we will want to see if this is an adjustable setting within your Nvidia control panel.

Thank you,

David W.
Plugable Technologies
www.plugable.com/support


#3

Hi,

I have changed to 8bpc and I used an old HDMI cable, but now I just purchased an Amazonbasic high speed HDMI cable (+ethernet) and using 8bpc as the output color depth, it is still not showing me the 60Hz option… !](https://d2r1vs3d9006ap.cloudfront.net/s3_images/1720301/Capture2_inline.JPG?1522204961)](https://d2r1vs3d9006ap.cloudfront.net/s3_images/1720301/Capture2.JPG?1522204961)


#4

Hi Patrick, thanks for the reply and strange that 60Hz is still not showing as an available refresh rate. You already have the settings set properly for this TV in order for this to work, so from here we’d want to make sure that the Nvidia drivers are up to date. This is the most recent Nvidia driver listed on the Nvidia site --> https://www.geforce.com/drivers/resul….

If that does not help or if your Nvidia drivers are up to date we’d want to send you a pre-tested adapter to make sure that this is not being caused by a strange hardware issue with the adapter. Please contact our direct support email at support@plugable.com with ‘Ticket Number 219429’ in the subject line. Please include your Amazon Order ID number for your purchase and preferred shipping address and we will begin the replacement process.

Thank you,

David W.
Plugable Technologies
www.plugable.com/support


#5