tweaktown.com › news › 111415 › … HDMI 2.1 support coming to Linux and Valve's Steam Machine courtesy of AMD TweakTown News Gaming TL;DR: Valve and AMD are adding HDMI 2.1 support to Linux and SteamOS, enabling higher bandwidth for 4K 120Hz gaming and variable refresh rate VRR . … May 4, 2026 · Kosta Andreadis