Overview
- AMD’s newest amdgpu patches introduce HDMI Fixed Rate Link, the higher-bandwidth signaling required by HDMI 2.1.
- Patch notes from AMD’s Harry Wentland say Display Stream Compression is still in testing and will be posted later.
- AMD indicates a full HDMI 2.1 compliance run is planned before a complete implementation ships.
- For Steam Machine and Linux PCs, FRL can enable 4K at 120 Hz and variable refresh rate on compatible TVs and monitors.
- Open-source drivers previously stalled at HDMI 2.0 due to HDMI Forum licensing rules, which AMD and Valve have been working to navigate.