Technically, the Steam Machine supports HDMI 2.1. However, Valve and AMD are not allowed to offer an open-source driver for it.

At this time an open source HDMI 2.1 implementation is not possible without running afoul of the HDMI Forum requirements.

    • DdCno1@beehaw.org
      5·
      2 months ago

      A couple of years ago, I hooked up my laptop to a monitor and to watch a movie from a streaming service. Since the monitor (a budget AOC model) didn’t support HDCP, it didn’t play.

      Here’s the amazingly sophisticated hack I used to get it working: Instead of using the monitor as an additional display, I mirrored the laptop screen to it. Millions of dollars developing DRM defeated by a single key stroke.