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

The HDMI Forum, responsible for the HDMI specification, continues to stonewall open source. Valve’s Steam Machine theoretically supports HDMI 2.1, but the mini-PC is software-limited to HDMI 2.0. As a result, more than 60 frames per second at 4K resolution are only possible with limitations.

  • fonix232@fedia.io
    4·
    3 days ago

    DisplayPort to HDMI doesn’t need an adapter since DP has an alt signal mode with HDMI support.

    Although I’m not sure 2.1 signalling is available yet or not.

    • kkj@lemmy.dbzer0.comEnglish
      10·
      3 days ago

      DP++ HDMI support tells the GPU to output HDMI. If the GPU can’t output HDMI 2.1 over an HDMI port, it can’t output it over a DisplayPort (as a general rule; you could theoretically wire the DP for a higher standard, but why would you?)