Valve: HDMI Forum Continues to Block HDMI 2.1 for Linux

https://reddthat.com/post/55870961

Valve: HDMI Forum Continues to Block HDMI 2.1 for Linux - Reddthat

>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.

Not that this cube would run any modern game at 4k and more than 60 fps.
Nobody said you need to play a modern game. Just play an older or indie game and enjoy gloriousness.