* https://en.wikipedia.org/wiki/DisplayPort#Specifications
* https://www.cablematters.com/Blog/DisplayPort/does-displaypo...
The HDMI Forum apparently forbids any open source implementation of HDMI 2.1. Although I don't know if they ever offered an official justification, for a group that exists to promote HDMI adoption, they're clearly morons.
As the article says, they most likely changed their mind, probably following quite a bit of background discussions and industry influence.
WHY!?
Meanwhile, features where you can't compete on numbers but can ruin the experience are ignored.
Plenty of people who test monitors also compare things like color coverage, brightness, latency, contrast, viewing angles, etc, etc, etc. If you mean the entire monitor, they generally also cover things like how the display swivels/mounts among other things.
I must admit I've sometimes seen a description of how wobbly the monitor is when you hit your mechanical keyboard like it's stolen your car and killed your dog. Veeery rarely though.
Plus I havent really seen an external dp2.1 kvm switch yet and I'm sure if they exist they are expansive.
If you want to support 8k 60Hz, the only reason you wouldn't also support 4k 240Hz would be because you actively choose to disallow that. That seems like a bad idea.
I have a 360 and when I play something I can actually get a full 360 out of, it's wonderful! Though honestly anything over 100 I'm perfectly fine with.
I've been talking about 8k @ 60Hz and 4k @ 240Hz, because those are the same data rate; 1 990 656 000 pixels per second. One expressed as 7680 x 4320 x 60, the other expressed as 3840 x 2160 x 240.
What does any of this have to do with upscaling?
Besides, it wouldn't be the first time a TV advertises a higher mode than the display can actually handle.
Conversion is a very intricate spec fulfilment over an incredibly high bandwidth signal.
I did the dive; The adapters are not sufficient.
The Chrontel CH7218 is the most reliable but still also suffers blackouts during VRR.
ParadeTech PS196 adapters advertise VRR support but their DPCD does not correctly communicate that it is supported. So even if you add the chip to the VRR PCON list in the amdgpu driver, it still won't see VRR as supported.
And while some of these advertise themselves as displayport 2.0, all of them only support bandwidth of 25.96gbps on the displayport side, requiring DSC for 4k 120hz 10bit color, even though they support 48gbps on the HDMI output.
When doing 4k@120fps 4:4:4 chroma you might have to deal with longer handshakes and sometimes even no handshake at all. Or random dropouts. Or HDR not activating properly.
Random dropouts tho sound bad… with high speed signaling also sounds like a pain to figure out
How could 4k@120 be translated to 8k@60 internally? 8k@60 is twice the number of pixels per second as 4k@120.
I still have no idea what you're trying to say.