HDMI management organization refuses to disclose specifications to open source project, and support for HDMI 2.1 including 4K / 120Hz output is hopeless
The HDMI Forum, an industry organization that formulates HDMI standards and manages licenses, has refused AMD's request to disclose HDMI 2.1 specifications to open source driver development projects. This has made it virtually impossible to implement HDMI 2.1 features with open source drivers, including AMD's drivers for Linux.
4k@120hz unavailable via HDMI 2.1 (#1417) · Issue · drm / amd · GitLab
HDMI Forum Rejects Open-Source HDMI 2.1 Driver Support Sought By AMD - Phoronix
https://www.phoronix.com/news/HDMI-2.1-OSS-Rejected
The HDMI Forum is known for being reluctant to disclose specifications to the open source community, and in the past there were issues with AMD's screen synchronization technology 'FreeSync' not working on Linux, and various HDMI functions are available through open source drivers. The situation continued to be difficult to deal with.
In December 2020, an issue was reported on the project page of a Linux driver developed by AMD as open source saying, ``I am using HDMI 2.1 compatible hardware, but I cannot output at 4K/120Hz.'' However, Alex Deucher, a member of the development team, answered, ``The HDMI Forum refuses to disclose the specifications to the open source community,'' revealing that it is difficult to respond.
AMD seems to have approached the HDMI Forum to support HDMI 2.1 in open source drivers, but on February 29, 2024, Deucher said, ``Unfortunately, the HDMI Forum has rejected our proposal.'' 'Currently, it is impossible to support HDMI 2.1 with open source while adhering to HDMI Forum rules,' revealing that it has become virtually impossible to support HDMI 2.1 with open source drivers. did.
VESA, which has created the DisplayPort video interface standard that is the second most widely used video interface standard after HDMI, is known for its flexible stance toward the open source community, and its open source drivers also support output at 4K/120Hz. Is possible.
What's so great about the video interface standard 'DisplayPort'? -GIGAZINE
◆Forum now open
A forum related to this article has been set up on the GIGAZINE official Discord server . Anyone can write freely, so please feel free to comment! If you do not have a Discord account, please create one by referring to the article explaining how to create an account!
• Discord | 'Have you ever encountered an HDMI-related accident?' | GIGAZINE
https://discord.com/channels/1037961069903216680/1213050788608483368
Related Posts:
