Running out of ideas with weird artifacting issue

[Rainbrew]

I've been experiencing issues with weird green artifacting when entering the BIOS and Windows on my new monitor and was convinced that it's a matter of a faulty displayport input. As a sanity check before packing it up and returning the display I decided to swap my 4080 out for my old 1060 to see if the problem persisted and to my shock it disappeared.

 

I've tried several DP cables and found that they do not affect the issue whatsoever. At this point I'm trying to figure out if it is in fact the monitor or an issue with the GPU/other hardware.

 

Things I've tried:

-Different displayport cables

-Re-seating the GPU

-Re-seating the power connector

-Reinstalling drivers after wiping them with DDU

-Scanning windows for corrupt files

-Checking if I have the latest Nvidia DP firmware

-Checking for any faulty contacts in the PCIe slot on my motherboard and the connector on the GPU

-Trying a different displayport output on the GPU (tried all of them)

 

I'll be seeing if for whatever god forsaken reason the culprit is in reality my cablemod set attached to the 16vhpwr squid adapter but I highly doubt that's possible.

I have a theory that the 1060 either due to age or some compatibility quirk works for some reason or can't drive the display as well as the 4080 and that somehow fixes the issue. I didn't have these issues on the previous display I had but it was faulty in other ways (Odyssey G7 QC is notoriously bad). HDMI cables work and cause no issue.

 

Any ideas on where to go from here? Is it possible that all 3 DP outputs on the 4080 went to crap but not the HDMI? I'm running out of ideas at this point and would greatly appreciate any help.

 

Specs:

Ryzen 7 5800x

32GB (2x16) 3600mhz CL16 Corsair Ram

Asus STRIX x570-E Gaming WIFI 2

Corsair RM750x PSU

Cablemod  Modmesh Pro cable set

Gainward Phantom RTX 4080

Windows 11 Pro 64 bit

512gb nvme SSD + 256GB SATA SSD

[Tetras]

3 minutes ago, Rainbrew said:

I have a theory that the 1060 either due to age or some compatibility quirk works for some reason or can't drive the display as well as the 4080 and that somehow fixes the issue. I didn't have these issues on the previous display I had but it was faulty in other ways (Odyssey G7 QC is notoriously bad). HDMI cables work and cause no issue.

 

Any ideas on where to go from here? Is it possible that all 3 DP outputs on the 4080 went to crap but not the HDMI? I'm running out of ideas at this point and would greatly appreciate any help.

If your previous display worked AND HDMI works, then I think it suggests the monitor is the problem and not your 4080, but this:

 

4 minutes ago, Rainbrew said:

I decided to swap my 4080 out for my old 1060 to see if the problem persisted and to my shock it disappeared.

Breaks the theory.

 

What features do you have enabled with the 4080, that are not enabled with the 1060?

 

Overdrive?

HDR?

Adaptive-sync?

 

Though, you mentioned it applies in both the BIOS and Windows, so it would have to be something that doesn't require any driver/OS interaction.

[191x7]

Latest motherboard bios?

 

Can you try the GPU in a different PC?

 

Have you checked the GPU for memory errors?

 

Can you try with a different monitor that uses the same connection type?

[Rainbrew]

14 minutes ago, Tetras said:

If your previous display worked AND HDMI works, then I think it suggests the monitor is the problem and not your 4080, but this:

 

Breaks the theory.

 

What features do you have enabled with the 4080, that are not enabled with the 1060?

 

Overdrive?

HDR?

Adaptive-sync?

 

Though, you mentioned it applies in both the BIOS and Windows, so it would have to be something that doesn't require any driver/OS interaction.

None of the above sadly, I haven't had the opportunity to try out HDR properly and adaptive sync/overdrive have been left completely untouched. I had previously used g-sync but I reset all Nvidia and monitor settings so it's not on right now and the issue still appears.

 

11 minutes ago, 191x7 said:

Latest motherboard bios?

 

Can you try the GPU in a different PC?

 

Have you checked the GPU for memory errors?

 

Can you try with a different monitor that uses the same connection type?

I unfortunately don't have a spare PC to try it out in. I haven't checked the GPU memory for errors but I'll figure out how to do that in a second. As for the monitor I might try to borrow one from a nearby PC repair store or from a friend who lives nearby to try it out.

 

One interesting development is that when using HDMI the screen randomly turned off for a second so I'll switch back to my old HDMI monitor and see if that happens again.

[Rainbrew]

18 minutes ago, 191x7 said:

Latest motherboard bios?

 

Can you try the GPU in a different PC?

 

Have you checked the GPU for memory errors?

 

Can you try with a different monitor that uses the same connection type?

Oh and my bios is version 4802 which according to the Asus website is the latest one.

[Rainbrew]

1 hour ago, Tetras said:

If your previous display worked AND HDMI works, then I think it suggests the monitor is the problem and not your 4080, but this:

 

Breaks the theory.

 

What features do you have enabled with the 4080, that are not enabled with the 1060?

 

Overdrive?

HDR?

Adaptive-sync?

 

Though, you mentioned it applies in both the BIOS and Windows, so it would have to be something that doesn't require any driver/OS interaction.

The HDR question got me thinking and I remembered something I had issues with on my previous monitor as well (the one I returned). I was trying to enable Resizable BAR and was running into issues with the BIOS not displaying properly. One of the settings that was flipped was enable CSM and now after turning it back on I no longer see the green flashing when entering BIOS.

 

The other setting I realized was different is that my 1060 can't output 10 bit colour. After switching it to 8 bit on the 4080 I haven't been able to reproduce the green flashing when entering Windows.

 

I'm fairly sure the BIOS thing has been fixed with the CSM setting but I'm uncertain about the Windows flashing as it's very inconsistent and sometimes the screen briefly goes dark before displaying the login screen.

 

Edit: Turning on 10 bit colour causes the flashing in Windows confirmed

 

So what's going on? Display stream compression is somehow broken and I've got some weird settings that cause rebar to break?

 

[Tetras]

3 minutes ago, Rainbrew said:

I'm fairly sure the BIOS thing has been fixed with the CSM setting but I'm uncertain about the Windows flashing as it's very inconsistent and sometimes the screen briefly goes dark before displaying the login screen.

I think the way that graphics are displayed for the BIOS with CSM on are quite different to when you're using UEFI. Why UEFI would have visual problems and not CSM? I'm not sure, but I know NVIDIA have released updates for problems there (link), but their description does not mention what you are seeing as a symptom.

 

6 minutes ago, Rainbrew said:

The other setting I realized was different is that my 1060 can't output 10 bit colour. After switching it to 8 bit on the 4080 I haven't been able to reproduce the green flashing when entering Windows.

Hmm, I see. It could be that some of the software or graphics don't like running on a card with 10 bit colour, but I'm afraid this is way beyond my expertise.

 

8 minutes ago, Rainbrew said:

So what's going on? Display stream compression is somehow broken and I've got some weird settings that cause rebar to break?

From what you're describing, I suspect that neither the 4080 or the monitor are faulty and there are other issues going on here, more to do with configuration, compatibility, display standards and drivers/software.

 

Do you use the game drivers, or the studio drivers for your 4080?

[Rainbrew]

11 minutes ago, Tetras said:

I think the way that graphics are displayed for the BIOS with CSM on are quite different to when you're using UEFI. Why UEFI would have visual problems and not CSM? I'm not sure, but I know NVIDIA have released updates for problems there (link), but their description does not mention what you are seeing as a symptom.

 

Hmm, I see. It could be that some of the software or graphics don't like running on a card with 10 bit colour, but I'm afraid this is way beyond my expertise.

 

From what you're describing, I suspect that neither the 4080 or the monitor are faulty and there are other issues going on here, more to do with configuration, compatibility, display standards and drivers/software.

 

Do you use the game drivers, or the studio drivers for your 4080?

I'm running the latest game drivers, I've never touched the studio ones. I'll try to find some settings online that maybe I need to play around with to get stuff running. I was under the impression that with DSC you can get 240hz 1440p with 10bit colour and HDR. I'm not sure I'll be able to test my PC on another display with DSC to verify if it's the GPU that's at fault here though so here's hoping there's a magic setting I missed somewhere .

[Tetras]

25 minutes ago, Rainbrew said:

I was under the impression that with DSC you can get 240hz 1440p with 10bit colour and HDR. I'm not sure I'll be able to test my PC on another display with DSC to verify if it's the GPU that's at fault here though so here's hoping there's a magic setting I missed somewhere .

Hmm, I'm not sure about the ability to achieve those settings, but the problem only presents itself in the BIOS and when entering Windows, right?

 

If so, it could be that the BIOS does not support 10 bit colour and the graphics are not actually an issue, but just a distortion, whereas since CSM's software is so basic, it doesn't even try to display anything with 10bit colour, hence no distortion appears.

 

I don't know when Windows fully enables the hardware/driver support when you login, but it could be the same thing.

 

25 minutes ago, Rainbrew said:

I'll try to find some settings online that maybe I need to play around with to get stuff running.

Yeah, though it might be that you can't, since 10 bit colour and HDR are still pretty new, so I wonder if these are just teething problems, that will work themselves out over time?

 

25 minutes ago, Rainbrew said:

I'm running the latest game drivers, I've never touched the studio ones.

You could give them a try, since they may be tested more thoroughly for these settings?

[191x7]

Also you might try disabling the MultiPlane Overlay MPO and retesting.

[Rainbrew]

13 hours ago, Tetras said:

Hmm, I'm not sure about the ability to achieve those settings, but the problem only presents itself in the BIOS and when entering Windows, right?

 

If so, it could be that the BIOS does not support 10 bit colour and the graphics are not actually an issue, but just a distortion, whereas since CSM's software is so basic, it doesn't even try to display anything with 10bit colour, hence no distortion appears.

 

I don't know when Windows fully enables the hardware/driver support when you login, but it could be the same thing.

 

Yeah, though it might be that you can't, since 10 bit colour and HDR are still pretty new, so I wonder if these are just teething problems, that will work themselves out over time?

 

You could give them a try, since they may be tested more thoroughly for these settings?

I think you're right with the 10 bit thing. I found a setting in the monitor that disables DSC and it fixed the green things popping up entirely both in the bios and in Windows regardless of the CSM setting. So it actually might be the monitor after all. I'll try to figure out with the store I got the monitor from if this is normal. I'm not sure how to diagnose the problem if it's on the GPU side without another DSC monitor.

 

Thanks so much for your help I'll give you the epic gamer solution checkmark as soon as I hear back from the store.