What has changed that allows them to do this, or are they just ignoring the HDMI Forum?
this post was submitted on 01 May 2026
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What is the difference between this implementation and the reverse engineered patches that were published a few months ago by Michał Kopeć and Tomasz Pakuła?
Edit: apparently it’s not the same patch, but Tomasz was CC’ed in the patch set so the timing might not be accidental.
I wonder what this means for the Steam Machine.
I wonder if this means we can get VRR on the Steam Deck via official dock. That would be great.
Well, the article says we won't, so no need to wonder
UPDATE: Even more exciting... Per this comment from a prominent AMD Linux developer, it looks like a full HDMI 2.1 implementation for AMDGPU could be coming!
Title is clickbait. All that's been confirmed so far is FRL.
Typical Phorinix. Wil not elaborate what FRL is.
The first paragraph:
It's not complete HDMI 2.1 support but to much surprise hitting the mailing list today were official patches from AMD for implementing HDMI Fixed Rate Link "FRL" support for their kernel graphics driver. HDMI FRL as part of HDMI 2.1+ allows for higher bandwidth to support higher refresh rates and resolutions.
How much more of an explanation do you need?
Fixed Rate Link.
Finally real answer!
I’m no expert, but basically the way to unlock higher/full bandwidth for HDMI 2.1. This will allow the use of higher refresh rate, resolution, and bit depth + HDR. Right now you need to make sacrifices in at least one category with HDMI
Yeah I know the issue. You can run 4k TV at 120hz through it but it will use chroma subsampling to run on limited bandwidth.