"HDMI Forum Rejects AMD's Open Source HDMI 2.1 Driver Proposal"

TL;DR
The HDMI Forum has rejected AMD's proposal for an open source HDMI 2.1 implementation, making it unlikely for AMD to support HDMI 2.1 on Linux. This leaves Linux users with AMD hardware to rely on DisplayPort for now, while NVIDIA's open source driver may potentially support HDMI 2.1 in the future.
- The HDMI Forum rejected AMD's open source HDMI 2.1 implementation GamingOnLinux
- HDMI Forum to AMD: No, you can't make an open source HDMI 2.1 driver Ars Technica
- HDMI Forum rejects AMD's HDMI 2.1 open-source driver Tom's Hardware
- HDMI Forum Rejects Open-Source HDMI 2.1 Driver Support Sought By AMD Phoronix
- HDMI Forum rejects AMD proposal for open source HDMI 2.1+ driver support VideoCardz.com
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