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Graphics Cards

proudrooster
Journeyman III
‎08-26-2022 05:11 PM

Display Port Gives Black Screen No Signal on Dell U2415 Monitor with RX 6600 XT

I have a new AMD 6600 XT connected to a Dell U2415 Monitor using an 8K Capable Display Port Cable and get NO SIGNAL, BLACK SCREEN.

The display port input will work when connected to a Mac but not on  a Windows 10 PC with an AMD 6600 XT.

To resolve the issue I have tried multiple cables and get the same result each time.   

The 6600 XT works fine with the Display Port to VGA/HDMI adapters but will not work with a straight through display port cable.  I appreciate any ideas.  I am trying to move to display port cables since they are supposed to be superior to HDMI but NO SIGNAL. 

Thank you

 

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1 Reply
cwiggles
Elite
‎08-29-2022 01:51 AM

Hi,

According to the manual for your monitor 

Dell UltraSharp U2415 User’s Guide

it is not clear if the monitor auto detects which video input port to use, so I would go into the monitor settings and manually select the video input to be DisplayPort and make sure to enable the DisplayPort 1.2 setting.

As I understand it DisplayPort 1.4a is not backward compatible with DisplayPort 1.1 and earlier.  Happy to be corrected if I am wrong on that though.  Refer to page 43 in the monitor manual on the Display Port settings. 

Best of luck

Craig


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