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MartinSd
Adept II
Adept II

RX 6800 Black screen under load

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So not the first one to get this issue, there have been countless topics about this, and AMD has been a bit silent on this lineup. Would we be seeing any driver updates this month? 

To summarize the issue:

During gaming, all monitors go black, the GPU fans sometimes swing at full speed or remain at the same fan level, all lights are still on, the audio cuts off 4-5 seconds after that happens, then the lights turn off. I can't do anything except hard reset the PC

I've mostly noticed this happening under heavy load (GPU usage 80-100%) especially with a video playing in the background. This is not mandatory as the black screen crash could happen randomly within 5-10 minutes of gaming

Tried all possible solutions so far:

Manually updating drivers
Windows reinstall
CMOS reset
GPU reseat
Separate Power cable + reseat
XMP disable
Bios reset
AMD Drivers without Adrenalin
Windows Update

1 Solution

Accepted Solutions
MartinSd
Adept II
Adept II

Re: RX 6800 Black screen under load

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I RMA'd it and AsRock confirmed the card was defective.


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100 Replies
mackbolan777
Forerunner
Forerunner

Re: RX 6800 Black screen under load

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Full specs?

"It worked before you broke it!"
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MartinSd
Adept II
Adept II

Re: RX 6800 Black screen under load

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Of course,

R7 3700x
HyperX 32GB DDR4 3200 (4x8)
B450 Tomahawk Max
Seasonic Focus Plus 80+ Gold 750w 
ASRock Phantom Gaming D RX 6800 OC

All on stock settings, no custom OCs or stuff


The PSU is fairly new as well, and I previously used an RX580

E.g event viewer crash log: https://i.imgur.com/NIywIm2.png
It's the generic system shutdown unexpectedly one unfortunately, not sure how helpful that would be

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mackbolan777
Forerunner
Forerunner

Re: RX 6800 Black screen under load

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You say "monitors", how many, and what size? Aside from that, you might want to explore the Adrenaline software and manually tweak the card some. Under "Tuning", choose "Auto", "Undervolt GPU", write that number down. Notice the stock GPU clock speeds of min/max. Switch to manual OC and enter the number from the undervolt that the software set. Make sure both the minimum/maximum clocks are set to minimum clock 100Mhz below the maximum one. Unlock the power limit and set that to max, it will only use that voltage if needed. Unlock the fan control and turn off "zero RPM", set a slightly more aggressive fan curve. We want to try to keep the card in the 70-80c range on the highest side of the operational temp if possible. Lower is better. 

I have a Gigabyte RX 6800 and my settings are: min clock 2400/max clock 2500, Voltage 1.00mv, VRAM 2150, Fan curve is custom so that at 50c they are at 50%, 60c/70%, and so on to 100% at 80c. Mine runs 70-75c full load but only one screen at 1080p/185Hz on DP. My settings are reference only and may not work for you. 3rd party card makers tend to toss a bit too much voltage to get things done when it's not required which causes heat, lots of it. It's a shame these "OC" cards don't come ready to use universally and we need to refine what they made by delving into settings that should be "ok". I looked at yours on AsRock's site and the difference between clocks is too wide in an effort to reduce temps vs. dropping some extra juice and getting much more bang for the buck.

I'd also check out what that "volmgr" error is in the log a few seconds before the error 41 which was caused by the shutdown. The error if caught will be a few minutes to seconds before that code 41.

"It worked before you broke it!"
MartinSd
Adept II
Adept II

Re: RX 6800 Black screen under load

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Three monitors, all 24" two of them are at 60Hz, one of them is 144Hz

I did try with only one monitor and a Displayport/HDMI plugged in (The 144Hz)

Now what I haven't tried yet is a heavy underclock + undervolt

MartinSd
Adept II
Adept II

Re: RX 6800 Black screen under load

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Also not sure but I think the PCI-e cables might be problematic for this GPU, not an expert on PSUs but here's what is being used at the moment (2x 6+2), as that is what my PSU came equipped with

The +2 is drawing power from the 6x perhaps?
The PSU connection part is also missing two pins (as seen in the picture)

https://i.imgur.com/gbMOtbE.jpg

mackbolan777
Forerunner
Forerunner

Re: RX 6800 Black screen under load

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That's how mine is powered. A single/double 6+2 connector off a PCIe output on the PSU. Just make sure it's marked as a PCIe or VGA output on the PSU and not "CPU" or "Motherboard". In any case, if the output was wrong, the problem would happen right away. 

My settings are an overclock/undervolt not underclock by any means. The OC might stabilize the card, even using lower numbers than me as long as the min/max clocks are within 100Mhz of each other. Lowering the voltage some reduces overall temps under load as these as most AMD cards come running more juice than needed to cover differences in quality. That's why I go into the Radeon tuning and use the "automatic" overclocking area to find the minimum voltage that it calculates as a stable undervolt. Some cards may not be able to run at 1.00mv and need more power, others less all the way to .900mv. That's why setting the "power limit" to max is important. It allows for the card to add some extra voltage as needed and not full time. 

Moving the GPU clocks closer eliminate voltage spikes that happens as the card ramps up and down while gaming or anything really. Think of how the card going from 500Mhz to 2430Mhz as an example would cause the card to suddenly increase voltage, which can even cause the PSU to trip the protection circuit causing a reboot. These cards are powerful so I think in the future, the drivers will set those clocks closer after enough complain about it, lol. So setting the 2 clocks within 100 Mhz like 2330/2430 or something is less strain.

As far as refresh rate goes, the card should pick the lowest of all 3. If not, try limiting the 144 to the lower refresh rate. It's always best to use matching refresh rate monitors or the same brand/model in multiple setups since the GTG (response time) is different as well. 

"It worked before you broke it!"
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MartinSd
Adept II
Adept II

Re: RX 6800 Black screen under load

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Good suggestions, I applied the undervolt+overclock max values and brought up the min-frequency slider higher, closer to the max one

It still black screened unfortunately :\

mackbolan777
Forerunner
Forerunner

Re: RX 6800 Black screen under load

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Using one monitor or the mismatched 3?

"It worked before you broke it!"
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MartinSd
Adept II
Adept II

Re: RX 6800 Black screen under load

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Tried both, using just one monitor, all 3 at the same time, all with the same refresh rate (60Hz)

Still no luck :\