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RePete222

DVI-D port of RX570 GPU not working; monitor detected

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When I connect one of my monitors to the DVI-D port of my RX570 GPU, the screen is dark, even though Mojave does detect and correctly identify the connected monitor.  I was fortunate enough to have a DVI-to-DP adapter laying around (left over from use with an old laptop), and can get the monitor working through the second DisplayPort.  Under Windows 10, the same monitor works when connected to the DVI-D port.

 

Can anyone offer guidance on how to get the DVI-D output to work under Mojave? Also, might a similar fix be required for the HDMI ports, should they also prove to be defunct under Mojave?  (I haven't tried the HDMI ports under Mojave yet, but may need to at some point in the future.)  I have been searching all over, and can't seem to hit on the right search terms to find a solution.

 

Thanks.

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Well, I did the reflash, but still get a black screen when connected to the DVI-D port. :( Still have to use the DP adapter to see the display.

 

When connected to the DVI-D port, it works fine in Windows 10.  Also, during Clover bootup, all the verbose mode messages are displaying, but the screen goes black once it gets to the Mojave desktop.

 

Any ideas on what else to try?

Edited by RePete222
Clarify when screen is black.

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22 hours ago, Slice said:

Switch off verbose mode and boot with apple on screen.

Tried that, and boy oh boy, what a mess that made!  First couple of attempts resulted in a freeze just before the progress bar got all the way across.  The DVI-connected monitor went dark, and the other monitor froze with vertical "noise" stripes down the screen.  Some of that repeated after going back to the DVI-to-DP adapter, but I eventually got all the way in.

 

On a later attempt through the DVI port, I booted a few times--even powering off/unplugging the PC for several minutes between attempts, just to find out whether it repeated.  Most attempts did get the vertical-noise-stripes freeze; when I did make it all the way to the desktop, the DVI-connected monitor again went dark.  After switching back to the DP adapter, I kept on getting the vertical noise stripes on both monitors, which kept coming back with each retry.  Even the first couple attempts to boot from a rescue boot disk had the same problem!  I FINALLY did manage to get the rescue boot to succeed, and am running on that system as I type this.

 

I am attaching a screen shot to show an example of the vertical noise stripes mentioned above.

DSC04971.JPG

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It should be specific for your card BIOS. Try to flash a BIOS from different vendor.

Open GPU-Z. Save original BIOS.

Open Polaris BIOS Editor and look for subsystem ID. Remember.

Take a BIOS from techpowerup with the same memory type and size.

Open Polaris BIOS editor and change SubID in new BIOS with value from your original BIOS.

Flash new BIOS with ATIWINFlash.

 

I did this. 

Before I have artefacts, CSM only and non-working DVI port.

Flashing XFX BIOS I got UEFI BIOS and working DVI. As well I got good Graphics Power Management and Fan control.

Снимок экрана 2020-01-21 в 21.01.35.png

 

 

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On 1/21/2020 at 12:03 PM, Slice said:

It should be specific for your card BIOS. Try to flash a BIOS from different vendor.

Open GPU-Z. Save original BIOS.

Open Polaris BIOS Editor and look for subsystem ID. Remember.

Take a BIOS from techpowerup with the same memory type and size.

Open Polaris BIOS editor and change SubID in new BIOS with value from your original BIOS.

Flash new BIOS with ATIWINFlash.

I will give that a try; may not be able to get to it until the weekend.

 

In the meantime, I have reverted to the original VBIOS, to fix the hit-and-miss startup freezes with the vertical stripes.  Curiously, the second DP port quit working in Windows 10--until I went into Radeon settings and turned on EyeFinity extended displays.  Both HDMI ports and the DVI port were hot-plug detectable, but not the second DP port. :surprised:

 

Using a DVI-to-HDMI adapter, I confirmed that (under the original VBIOS) both HDMI ports have the same issue under Mojave as the DVI port--so only the DP ports are functional.

 

On 1/21/2020 at 12:03 PM, Slice said:

I did this. 

Before I have artefacts, CSM only and non-working DVI port.

Flashing XFX BIOS I got UEFI BIOS and working DVI. As well I got good Graphics Power Management and Fan control.

Are you saying that, with your old VBIOS, your main BIOS would not allow you to turn off CSM (or set a UEFI-preferred setting)?  That's what I have been seeing with my MB BIOS; I thought it was from my Windows boot drive being formatted MBR. Didn't occur to me that the VBIOS might be the actual culprit.

 

Thanks.

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