Aorus RX5700-XT HDMI behaving weird (Ok on BIOS, but blank on Windows)

Hardware Hub GPU
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I’ve seen very similar posts on reddit and some other places, but not exactly this so figured I’d post it and see if anyone with this GPU/MB combo can duplicate this:

MB: AsRock X570 Taichi
GPU: Aorus RX5700-XT

I specifically bought this GPU because I have 3 identical 27" HP monitors and this card has 3-HDMI outs (plus 3 DP out). It says it can support up to the 6 displays at once. So here’s the problem:

When I connect all three monitors via HDMI to the three HDMI ports only 2 are detected by Windows. I’ve done all the normal troubleshooting, but read on for the real craziness:

The one HDMI port where I have connected the monitor not being detected by Windows WORKS! It just only works during initial post, BIOS display and up to the ‘Starting Windows’ screen. Once Windows finishes loading it goes black and nothing can make it display again while in Windows.

The normal troubleshooting I’ve done is:

  • Tried various HDMI cables (all work during BIOS and all work on the other two ports during Windows operation)
  • Swapped all HDMI cables around the different monitors and the two other HDMI ports and all monitors work during BIOS, but none on that one port after Windows startup
  • Complete uninstall and reinstall of various versions of Adrenaline software up to and including the optional one just released.
  • Safe mode boot only displays through a specific HDMI port (I assume that’s the main one) – will not detect any other displays while in safe mode
  • All three monitors are identical (HP27es)
  • I have tried both HDMI 1.4 and 2.0 cables
  • One of the HDMI ports on the card is 2.0b while the other two are 1.4 – not sure if this has anything to do with it given the backward compatibility, but figured I’d throw it out since I read it on the card specs (and not sure if the port not working in Windows is the 2.0b since I haven’t found a layout of the card) – however, the ports are grouped 2 on one end and 1 on the other. The one not working in Windows is in the side where there are two (so I would assume the lone one on the other end is likely the 2.0).

Not sure what else to put on here so shoot me any questions.

on edit: The card comes with two BIOS settings (OC and Quiet). It comes on the OC BIOS by default and when I tried to switch it to the Quiet BIOS just to see if there was a difference there are NO displays regardless of the number of monitors I connect to it or in which port. I’m starting to wonder if this card is pooched. HAS STARTED DISPLAYING NORMALLY ON QUIET BIOS NOW – go figure

Thanks,
Mike

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Have you tried a displayport to hdmi cable and run the third monitor from one of the displayport outs? May be a $5 solution.

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I’ve got one on order from Amazon. It should be here in a couple of days. I’ll update once I do, but that is like running on a skinny spare tire. Just because it still works doesn’t mean you shouldn’t fix your normal tire.

I’m trying to figure out if this is a problem with this card or this series of cards or this vendor, etc.

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Ok, so the update that I suspect will be the final one on this topic: All three monitors are working now after I got my DP > HDMI adapter. I connected the third monitor via the adapter to one of the DP ports on the card and it works.

Since I know that all three HDMI ports are actually able to display video up to the point when Windows loads then I can’t 100% say that port is bad.

Given the fact that I’m not looking to build a display wall of 6 monitors nor will I ever likely go beyond the current three (and the cost of the adapter was so minute <$10) I don’t think I’m going to put in a tech ticket with Gigabyte. I just don’t see how it’s worth the time and effort that will surely be involved in all their troubleshooting.

Appreciate the responses.
Mike

1 Like
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Good to hear it works and I hope you get some more life out of those monitors.

Hdmi is a funny standard with all the irritating DRM / copy protect stuff getting in the way.

I’ve had issues in the past with the hdmi ports on my Dell ultrasharps where the graphics card tries to output a different resolution that the display couldn’t handle. I suspect your issue is the advanced graphics card specs not actually being friendly with older monitors but a $10 workaround seems less stressful than a RMA.

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