Daily Technology
·05/12/2025
The Steam Machine shows that open source HDMI 2.1 drivers stay unfinished because the HDMI Forum refuses to release the needed rules. The hardware works - yet Linux-based SteamOS cannot switch on every HDMI 2.1 item. The block comes from policy, not from missing circuits and it hits every device that depends on open source video code. Valve depends on AMD open source drivers that likewise fail to hand over full HDMI 2.1 support.
Valve pushed the Steam Machine to “4K @ 120Hz” even though the port stays at HDMI 2.0. The trick stores less color detail - the link carries fewer bits per pixel and leaves room for extra frames. Some fine edges blur - yet the picture stays sharp enough for most games. PlayStation 5 plus Xbox Series X already use the same shortcut - high refresh 4K no longer demands an HDMI 2.1 television.
Valve's story repeats across the industry - open drivers clash with closed rules. The HDMI Forum keeps its license locked - a firmware signature - not a silicon limit - decides which features switch on. PCs, handhelds and media boxes all feel the same brake. Valve must boot Windows to confirm that the port reaches full speed and that extra step slows Linux adoption but also splits the user path.
Running 4K @ 120Hz on more than one operating system demands careful tests. Valve booted Windows on the Steam Machine just to prove that the HDMI 2.1 lines reach full rate. The need for dual checks appears repeatedly and drags down both innovation and the final user ride.









