B580 DisplayPort blank screen

[Cold_Burn]

The B580 gives a blank screen when using a DisplayPort (but as the screen is not turning on I assume it is still getting a signal)  works fine with an HDMI.

The display port allows me to see the bios splash screen.

Specs
Display Name: Pixio PX247 Free sync monitor 
Display Type: Digital
Mother Board: MAG B550 TOMAHAWK (MS-7c91)

Gpu: Intel B580 - PCIe v4.0 x8 (16.0 GT/s) @ x8 (16.0 GT/s)

CPU: AMD Ryzen 5 5600X
Ram: 16gb dd4 3200 Samsung


Issue present on both windows 10 pro 1905 and Mint Linux live USB

Steps tried
All DisplayPort's on card tried
3x different cables tried
DDU on Windows tried
Driver reinstall tried
Bios Updated
GPU reseated
Old rx vaga 64 tried and worked with DisplayPort

I connected both HDMI and DisplayPort and was able to see that VRR was set on the Monitor over display port.

With both HDMI and DisplayPort connected I was able to change both resolution and refresh rate of the DisplayPort connection but it still gave a blank screen when trying to swap back to it. 

[Cold_Burn]

So I have now also tried this with two other monitors one free sync and one not.
Both worked fine with DisplayPort.

The only thing I can think off is that my monitor has built in speaker so I suppose its not an apples to apples comparison.

Has anyone else had problems or strange issues with DisplayPort on these cards?

[RandyT_Intel]

Hello Cold_Burn,

Since the BIOS splash screen is visible, the DisplayPort is initially recognized, but the signal seems to drop when the OS loads. This suggests a potential driver or compatibility issue. The ability to change resolution and refresh rate indicates that the DisplayPort connection is partially functional, but the blank screen issue persists, which could be related to specific settings or driver conflicts. The fact that other monitors work fine with DisplayPort suggests that the issue might be specific to the combination of your current monitor and the B580 GPU.

To better assist you, I need to gather some additional information. Could you please answer the following questions? 

1. Can you please run the System Support Utility (SSU) and share the logs with me? 
2. How did you perform the last update? Did you use a device manager-clean installation or Display Driver Uninstaller (DDU) before updating to the latest graphics driver? 

I recommend trying the following troubleshooting step to address the instability issues you've been experiencing: 

How to Resolve Issue with Black Screen While Using the System with...

How to Use the Display Driver Uninstaller (DDU) to Uninstall an...

Intel® Arc™ Graphics – Desktop Quick Start Guide

Providing this information will help me diagnose the system more accurately and check for available solutions. Thank you for your cooperation, and I look forward to your response. 

Best regards, 

Randy T. 

Intel Customer Support Technician 

[RandyT_Intel]

Hello Cold_Burn,

I wanted to follow up regarding the questions and information we shared with you recently. Have you had a chance to review them? Your feedback is invaluable in helping us determine the next best course of action. 

Please let me know if you have any thoughts or if there's anything else you need from us. 

Looking forward to your response! 

Best regards, 

Randy T. 

Intel Customer Support Technician