4K120 HDR, VRR, DSC and more
Valve could not originally include HDMI 2.1 in its Steam Machine game console, but work on open-source drivers may now allow it to fully support HDMI 2.1 after all. We wrote about the HDMI 2.1 controversy back in December, when Valve explained that it could not support it due to the lack of open-source Linux drivers, as the HDMI Forum had blocked open-source implementations. Without HDMI 2.1, a game console cannot support 4K120 with HDR, VRR (variable refresh rate) and other high-resolution and modern video features. Solved? Fresh reports from TechPowerUp and Videocardz, based on posts by AMD developers on the Phoronix forum, describe how the issue is resolved, with an AMD Linux developer saying that HDMI 2.1 is now working on AMDGPU under Linux. Initially, the patch focused on Fixed Rate Link (FRL), which enables the higher 48Gbps bandwidth required for HDM
