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Why won't Steam Machine support HDMI 2.1?

7 days ago
https://arstechnica.com/gaming/2025/12/why-wont-steam-machine-support-hdmi-2-1-digging-in-on-the-display-standard-drama/
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  • #Steam Machine
  • #HDMI 2.1
  • #Linux Drivers
  • Valve's Steam Machine hardware supports HDMI 2.1, but full support is hindered by incomplete Linux drivers.
  • HDMI Forum blocks open-source HDMI 2.1 implementations, affecting SteamOS's AMD drivers.
  • Valve validated HDMI 2.1 hardware via Windows due to Linux driver limitations.
  • SteamOS currently supports 4K @ 120Hz via chroma sub-sampling, bypassing HDMI 2.0 limits.
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