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

AMD's efforts to implement HDMI 2.1+ functionality in their open-source Linux graphics driver have failed, as the HDMI Forum has rejected their request for open-source driver support, leading to limitations such as the inability to provide 4K@120Hz and 5K@240Hz capabilities on the AMD Linux driver. This decision highlights the challenges faced by open-source initiatives in accessing now-private HDMI specifications, despite efforts by AMD and the X.Org Foundation to find a solution.