Valve tells Ars its "trying to unblock" limits caused by open source driver issues.

The TL;DR is that the organization that controls the HDMI standard won’t allow any open source implementation of HDMI 2.1.

So the hardware is fully capable of it, but they’ll get in trouble if them officially implement it.

Instead it’s officially HDMI 2 (which maxes out at 4k @ 60Hz), but through a technique called chroma sub-sampling they’ve been able to raise that up to 4k @ 120Hz.

However there are some minor reductions in picture quality because of this, and the whole thing would be much easier if the HDMI forum would be more consumer friendly.

In the meantime, the Steam Machine also has display port as a completely issue free display option.

  • nialv7
    3·
    7 months ago

    USB-C alt mode is such a cursed protocol, plus the connector is way too flimsy for semi-permanent connections like monitors.

    • Zangoose
      1·
      7 months ago

      Isn’t USB C alt mode just sending a displayport signal over USB, or is there something else to it?

      • nialv7
        21·
        7 months ago

        You would expect it’s just sending display data encapsulated in usb data packets, right? But it’s actually physically reconfigure the usb wires to be displayport wires. And after that your USB-C port becomes a misshapen displayport…