The next generation of gaming consoles is here, and new graphics cards like the Nvidia RTX 3070 and RTX 3080 and AMD's Big Navi are launching tonight. Unfortunately, however, they are not.

New home cinema receivers from Denon, Marantz, and Yamaha are supposed to be able to output 4K120 or 8K60 video via HDMI 2.1. Unfortunately, testing of Denon's AVR-X2700H (via heise online and Tom's Hardware) revealed a bug in these models with Panasonic's new chip.

When attempting to connect an Xbox Series X or Nvidia graphics card to the new receiver using an HDMI 2.1 connection at 4K or 8K, the receiver would not allow the image to pass through, only a blank screen would appear.

It worked fine at lower resolutions, but this defeats the purpose of using HDMI 2.1. Or even the RTX 3090's signature 8K performance. Those using a direct HDMI 2.1 connection to an ultra-high-resolution display should have no problems, but don't worry, only those using the aforementioned home theater system are likely to encounter issues.

It is worth noting that the new Xbox c't magazine was using a prototype model, and the final model has not yet been tested. Also, the same chipset is used in Yamaha's product, which will likely cause problems. Sony's PS5 has not yet been tested, but according to those who have done the initial testing, it is expected to work without any real problems.

The problem appears to be due to a combination of a poor implementation of the "Fixed Rate Link" (FRL) transmission method and a problem with Data Stream Compression (DSC) According to Heise, Panasonic has stated that this problem "cannot be fixed even with firmware updates . cannot be fixed by firmware updates."

We will have to wait and see how Panasonic plans to address this issue. In the meantime, c't has introduced several workarounds in the original article, but we may have to wait until next year for alternatives that work in place of these faulty models.