Well one very good reason would be that their specification is closed source and as such not even HDMI Forum partner AMD can implement them in their open source driver.
For a long time we had VGA for video cables. There was no VGA version 2.1.9, now supporting 1024x768 mode with 16-bit colour. Cables did not cost $29. There were no rent-seeking patent holders charging license fees, or at least they weren’t obnoxious enough that we knew about them. It didn’t have five different types of connectors. There was no VGA consortium constantly keeping itself in the news with periodic press releases. Companies didn’t need to sign away their soul to write drivers for it. There was no VGA copy protection trying to keep us from decoding our own video streams. Cables didn’t include enough microelectronics to power a space shuttle.
Why?
Well one very good reason would be that their specification is closed source and as such not even HDMI Forum partner AMD can implement them in their open source driver.
https://www.phoronix.com/news/HDMI-Closed-Spec-Hurts-Open
DisplayPort spec is fully open btw.
Folks here might also find this article interesting:
DisplayPort: A Better Video Interface
Thanks for a great answer.
I don’t know, there’s just something about it.
For a long time we had VGA for video cables. There was no VGA version 2.1.9, now supporting 1024x768 mode with 16-bit colour. Cables did not cost $29. There were no rent-seeking patent holders charging license fees, or at least they weren’t obnoxious enough that we knew about them. It didn’t have five different types of connectors. There was no VGA consortium constantly keeping itself in the news with periodic press releases. Companies didn’t need to sign away their soul to write drivers for it. There was no VGA copy protection trying to keep us from decoding our own video streams. Cables didn’t include enough microelectronics to power a space shuttle.
Somehow I think we could do better.
I get it now. Thanks.
Compared to Displayport, here is a Techquickie (LTT) Video about it.