Bug in HDMI 2.1 Chipset May Cause Black Screen on Your Xbox Series X Console or NVIDIA GPU

[Chomiq]

Good to know when my Plasma finally dies a LG C9 OLED will probably be my next tv. I bought a Denon AVR like 2 years ago so its only HDMI 2.0 which maybe a blessing cause by the time I upgrade the AVR this issue will be resolved.

Don't worry, you'll still be stuck with LG's arc sync issue.

 

[Makaveli]

Don't worry, you'll still be stuck with LG's arc sync issue.

Haha hopefully that is fixed by D9 or E9 model.

I will probably get another 3 years use out of my plasma.

 

[Chomiq]

Haha hopefully that is fixed by D9 or E9 model.

I will probably get another 3 years use out of my plasma.

Current one is the _X line, CX and such. And no, they didn't fix it.

 

[Makaveli]

Current one is the _X line, CX and such. And no, they didn't fix it.

not a big deal I have time to wait.

 

[Ravenmaster]

I have a Denon 2020 AVR (X2700H model) and I tried hooking up my RTX 3080 to its 4k 120hz/8K 60hz HDMI 2.1 Input then hooked the HDMI 2.1 output to the LG C9. Can confirm the Denon AVR is absolutely bugged just like the article says. The screen goes black every 10 seconds or so and loses signal then comes back on only to go black again, rinse repeat.

Configuring things the opposite way around GPU ---> TV HDMI1 ----> TV HDMI2 (eARC) ----> Denon eARC seems to work fine.

I contacted the retailer i bought the AVR from told him about the issue and he in turn contacted Denon directly. Today he forwarded me a reply from Denon's sales rep:

Some new gaming source devices that support 4K/120Hz output may not work fully with Denon (or Marantz) 8K AVRs. You may discover this incompatibility issue due to a HDMI chipset mismatch between the devices. When the affected system is connected to the AVR via 8K HDMI input and set to output at 4K/120Hz, and the AVR’s 4K Signal Format option is set to “8K Enhanced,” you may not see the system’s source video on their display, and may not hear the system’s source audio processed through the AVR. This problem is only present when a display that supports 4K/120Hz is used.

We are currently investigating the issue further and will offer a permanent solution at a later date. Meanwhile, we would like to provide a couple workarounds to prevent the issue in its current state:

• You can connect the system to the display directly via HDMI and use the display’s ARC/eARC functionality to feed the native audio back to the AVR using the connected HDMI cable between the AVR and display. This will allow users to decode the native audio format sent from the source. With this method, the display’s CEC/ARC option must be enabled as well as the AVR’s HDMI Control and/or the AVR’s ARC option. In the AVR, this option is located within the GUI under “Video – HDMI Setup.”
• Another workaround is to leave or change the source’s video output to 4K/60Hz instead of 4K/120Hz until a permanent solution is available. This will ensure reliable communication between the source, the AVR and the display. The source’s default is set to output at 4K/60Hz, so if no change was initiated out of the box, then nothing further needs to be done.

We apologize for this inconvenience and we are currently working tirelessly to release a permanent solution so you can enjoy the 4K/120Hz experience using the latest sources with your AVR. We will have an update soon regarding the timeline of a permanent solution. We appreciate your patience.

So it seems Denon are now aware of the situation and are looking for fixes but IMO they're probably gonna have to recall all the 2020 AVR's and either switch out the chipset inside or replace then entire AVR. Here's a video which best describes the issue:

 

[TheoneandonlyMrK]

So basically it affects AMD graphics as well. huh.

Is there a hdmi 2.1 AMD card out now?, and they dont specifically mention either the ps5 or AMD ,did i miss something?.

 

[Kaotik]

So basically it affects AMD graphics as well. huh.

Not that simple, PS5 doesn't suffer from this.

 

[olstyle]

Last I read PS5 was just untested, so still 90% chance it will not work as well.

 

[Tardian]

Early adopters of new technology have all the FUN. FUN stands for F#cked Up Nightmare. We should all thank them for paying twice the price of a mature unit so they can Beta test and assist in the product development.

 

[Caring1]

.......
So it seems Denon are now aware of the situation and are looking for fixes but IMO they're probably gonna have to recall all the 2020 AVR's and either switch out the chipset inside or replace then entire AVR.

Good job, you basically repeated everything that was already said in the initial news post.

 

[Ravenmaster]

Good job, you basically repeated everything that was already said in the initial news post.

Huh looks like they edited their original post and copy pasted my email reply from Denon.

 

[bug]

Huh looks like they edited their original post and copy pasted my email reply from Denon.

No, it was there from the beginning.

 

[Ravenmaster]

No, it was there from the beginning.

Wasn't there when i read the original post this morning. The time stamp next to it only shows the time that the original thread was created, it does not show any time stamps for when the original post was edited. But do you see that he is using quote lines underneath the bug picture? Proves he's just updated the thread with the relevant update i provided.

 

[bug]

Wasn't there when i read the original post this morning. The time stamp next to it only shows the time that the original thread was created, it does not show any time stamps for when the original post was edited. But do you see that he is using quote lines underneath the bug picture? Proves he's just updated the thread with the relevant update i provided.

Do you see me referring to his quotes in post #3?

 

[Ravenmaster]

Do you see me referring to his quotes in post #3?

I see your reply in post #3 and it doesn't include any of the edited quotes he added later. *shrugs*

 

[Tardian]

For an interesting and often expert discussion on human perception of frame rates see:

What is the highest frame rate (fps) that can be recognized by human perception? At what rate do we essentially stop noticing the differe...

Answer (1 of 43): Consider a moving bright object on a dark background, like an X-wing fighter in space, moving across the screen. Your eye will track the object. Let's stick some numbers on this example. The object is moving fast enough to cross the screen horizontally in 10 seconds, and is d...

www.quora.com

Those who think one can't see improvements beyond 60hz/fps, try this:

Set your monitor to display 60hz and move your mouse quickly back and forth across the screen. Even my eyes can see the pointer turn into a series of non-continuous arrows. As the frame rate is increased those arrows become more numerous and closer together. An experienced gamer in the above article sees benefits up to 144fps and notes that input lag is often related to frame rate. My 4K OLED displays at 120hz and is a visual delight.

 

[R-T-B]

Current one is the _X line, CX and such. And no, they didn't fix it.

I feel like I should know this... but what issue? Am using HDMI ARC fine.

My 4K OLED displays at 120hz and is a visual delight.

What are you using to drive yours? The CAC-1085 adapter or a new Ampere?

 

[Chomiq]

I feel like I should know this... but what issue? Am using HDMI ARC fine.

https://twitter.com/x/status/1321016159949512704

LG OLED Audio Delay 2019 UPDATE? | Sonos Community

All, There are countless threads about the very obvious audio delay issue with LG OLED TVs and the SONOS ecosystem, but nothing has been done. After over a year of waiting and reading through SONOS community feeds nothing has been done even after one user got the CEO Patrick Spence involved. I...

en.community.sonos.com

 

[Tardian]

I feel like I should know this... but what issue? Am using HDMI ARC fine.



What are you using to drive yours? The CAC-1085 adapter or a new Ampere?

The TV displays at 120hz. I will be getting a PS5 soon and will be building a new HTPC using either the new NVIDIA or AMD graphics cards. Right now, I do not have any devices that can currently output 4K 120hz. As posted further above I leave the Beta testing and product development to the well-heeled eager beavers. Apologies if I suggested otherwise.

 

[medi01]

Uh, and how do we know XSeX is affected? It ain't released yet and there have been no reports about anyone playing stuff and having problem with it.
Was it injected into article just so that it's not "only NV" is affected?

"3080 blackscreens... but it's AIB's fault, they used bad capacitors", cough.

 

[Ravenmaster]

Uh, and how do we know XSeX is affected? It ain't released yet and there have been no reports about anyone playing stuff and having problem with it.
Was it injected into article just so that it's not "only NV" is affected?

"3080 blackscreens... but it's AIB's fault, they used bad capacitors", cough.

The first test was done on an engineering xbox series x sample which plugged directly into a Denon X2700H receiver and then the receiver's output was connected to the LG C9. They couldn't get a picture in that config - just a black screen. But when they plugged the xbox series x directly into the LG C9 then ran another cable from the C9's eARC socket to the receiver it worked fine. So its only the Denon AVR that couldn't passthrough a 4K 120hz signal. This is because the LG TV's and the Xbox Series X both use Uncompressed HDMI 2.1. The Denon uses an incompatible chipset (Compressed HDMI 2.1).

The RTX 3080 uses Uncompressed HDMI 2.1 just like the Xbox and the LG TV's.

 

[medi01]

The first test was done on an engineering xbox series x sample which plugged directly into a Denon X2700H receiver and then the receiver's output was connected to the LG C9. They couldn't get a picture in that config - just a black screen. But when they plugged the xbox series x directly into the LG C9 then ran another cable from the C9's eARC socket to the receiver it worked fine. So its only the Denon AVR that couldn't passthrough a 4K 120hz signal. This is because the LG TV's and the Xbox Series X both use Uncompressed HDMI 2.1. The Denon uses an incompatible chipset (Compressed HDMI 2.1).

The RTX 3080 uses Uncompressed HDMI 2.1 just like the Xbox and the LG TV's.

Compressed vs uncompressed doesn't sound like a "bug" to me, if support of the respective stream type is marked as optional for HDMI 2.1.

 

[R-T-B]

https://twitter.com/x/status/1321016159949512704

LG OLED Audio Delay 2019 UPDATE? | Sonos Community

All, There are countless threads about the very obvious audio delay issue with LG OLED TVs and the SONOS ecosystem, but nothing has been done. After over a year of waiting and reading through SONOS community feeds nothing has been done even after one user got the CEO Patrick Spence involved. I...

en.community.sonos.com

Probably don't see it because I use stereo.

The first test was done on an engineering xbox series x sample which plugged directly into a Denon X2700H receiver and then the receiver's output was connected to the LG C9. They couldn't get a picture in that config - just a black screen. But when they plugged the xbox series x directly into the LG C9 then ran another cable from the C9's eARC socket to the receiver it worked fine. So its only the Denon AVR that couldn't passthrough a 4K 120hz signal. This is because the LG TV's and the Xbox Series X both use Uncompressed HDMI 2.1. The Denon uses an incompatible chipset (Compressed HDMI 2.1).

The RTX 3080 uses Uncompressed HDMI 2.1 just like the Xbox and the LG TV's.

The LG TVs are supposed to support HDMI DSC, so there is still a bug or someone lying somewhere.