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HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

arstechnica.com

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Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#121

Post by dtx1 »

delta_p_delta_x wrote: post #51
dtx1 wrote: post #12

Earlier quoted context omitted.

I think the connector good be better in terms of reversibility and none of that weird locking it has but it's an incredible technical achievement. And it seems perpetually ahead of HDMI in terms of features and Bandwidth.

> And it seems perpetually ahead of HDMI in terms of features and Bandwidth. Not for the past few years. Although DP 2.0 has been 'released', there are no products actually shipping with it, and in practice DP 1.4 is the latest standard. DP 1.4 can't transmit 3840×2160 at 4:4:4 144 Hz without Display Stream Compression (DSC). HDMI 2.0 can.

> Although DP 2.0 has been 'released', there are no products actually shipping with it

Here's a GPU with DisplayPort 2.1 https://www.mindfactory.de/product_info.php/16GB-Sapphire-Ra...

Here's a Display with DisplayPort 2.1 and higher Resolution&Refresh Rate than you specified https://www.mindfactory.de/product_info.php/57Zoll--144-78cm...

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#122

Post by realusername »

fifteen1506 wrote: post #79
anthk wrote: post #25

The computer related companies should have given the middle finger to the media Mafiaa long ago and tell them to STFU if they ever wanted their content to be displayed in a computer with PC based standards and not MPEG. Once you get a libre OS you can dump the content of the BUS or fake whatever HDMI hardware out there to get pristine audio and video frames. Also, the current Hollywood movies are very subpar compared…

Sure. Try dumping SkyShowTime shows/movies then. (refuses to run on GNU/Linux). The average power user won't be able to run SkyShowTime on Linux. The idea is locking everyone on Windows, OS X or Linux with Secure Boot and verifiable boot chain if you want to watch movies or TV shows.

The irony is customers have a more reliable service with pirated shows nowadays, they always play and the quality doesn't change.

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#123

Post by globular-toast »

redox99 wrote: post #62

Luckily with mid and high end monitors, DisplayPort is the standard. I don't understand why TVs don't come with even a single DisplayPort though. Maybe they are paid off by the HDMI forum?

Quite a few still come with input configurations like 2xHDMI, 1xDP. I wasn't able to find a 4K monitor with 2xDP inputs. Really annoying.

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#124

Post by raarts »

reaperducer wrote: post #78
raarts wrote: post #67

Earlier quoted context omitted.

It’s a recently popular thing to use a tv as monitor.

It’s a recently popular thing to use a tv as monitor. Only if you you define recently popular as "More than yesterday, but still a rounding error."

Youtube is littered with videos about it. Has been for over 2 years.

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#125

Post by realusername »

rickdeckard wrote: post #16
BillyTheMage wrote: post #2

> you can't make an open source HDMI 2.1 driver because some people said so I don't understand. Fuck whatever committee said whatever crap. Open source is open source. Just make the damn driver and give the suits 2 middle fingers.

As a Member of HDMI-Forum AMD would surely break its Forum Membership contract by open-sourcing their implementation of a specification restricted to Members. Also, "HDMI" itself is a trademark with usage only allowed to its Members (like "Wi-Fi"), so even if a non-Member would do an open-source HDMI-implementation against the will of the HDMI-Forum, he would likely not be allowed to call it "HDMI" (like "WLAN" is us…

It would be possible to argue that both these terms are generic enough that the trademark lost its meaning, it wouldn't be the first time.

WiFi is pretty much there already

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#126

Post by macNchz »

Uvix wrote: post #113
emersion wrote: post #57

A possible workaround for users is to use an active HDMI adapter, e.g. a USB-C dock or DisplayPort → HDMI converter.

Last I checked those converters do not support HDMI 2.1 features like VRR. If the end output is HDMI 2.0 you might as well skip the middleman.

There is extensive discussion about adapters in the bug report thread, it seems that some adapters do actually support HDMI 2.1 features, but it depends on their chipset and firmware version. I got a CableMatters one that seems to work, to the best of my ability to test without my TV having a diagnostic panel to show info about the signal it’s receiving.

https://gitlab.freedesktop.org/drm/amd/-/issues/1417

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#127

Post by globular-toast »

dark-star wrote: post #4

If I understand it correctly, you can do that, but you cannot call it "HDMI compliant" or otherwise use the HDMI trademark.

I can live without the kernel being "HDMI compliant" and coming with an HDMI logo.

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#128

Post by Pet_Ant »

megous wrote: post #92
fps_doug wrote: post #61

Earlier quoted context omitted.

> AMD obviously needs to license the logo for their GPU boxes This poses an interesting question, maybe some of the hobby-lawyers on HN like to chime in and post heir theories :o) Let's assume they print that Logo on their box, call it HDMI in their Windows drivers, but don't do so in their Linux drivers, while it's still a spec-compliant implementation. Would that pose a potential legal problem, and if so why? If it…

You don't just sniff a 48Gbit/s protocol as a random hacker. That's not what happens in the real world. A real-time scope that could do that is in the $1mil dollar range. At best a random hacker will reverse engineer the binary driver enough to make something work in some capacity.

I mean a $1M is crowd sourceable if there was a trustworthy person to do this.

Re: HDMI Forum does not allow an open source implementation of the HDMI 2.1 spec

#129

Post by missjellyfish »

BigJ1211 wrote: post #95
addandsubtract wrote: post #56

Earlier quoted context omitted.

HDIY

Could then just call it: HDMIY, no? High Definition Make It Yourself

Trademark law always hinges on the question if a reasonable consumer with reasonable knowledge could be expected to distinguish those trademarks or not.

HDMIY would most probably not fly, HDIY would probably.

not yet a lawyer, though.

edit: I'm also fairly certain that the HDMI forum would fight HDIY tooth and nail, so whoever goes public with that absolutely needs deep pockets.

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