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!
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.
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.
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
LOL... Surprised they aren't only doing so for their workstation cards like they do for everything else. The SR-IOV disablement is just greed at its finest. AMD also just released their new CPU with only difference 3D cache on the orher side & they're charging like an extra $300 for it.
Not that I want to defend AMD but the reason they haven't been able to is because HDMI is a private spec and the HDMI forum specifically forbade them from releasing the driver they tried to publish a few years ago (even though the firmware with the actual implementation is in the GPU itself and still proprietary). That's why 2.1 works on windows and not Linux with the past 2 gens of AMD GPUs.
16 Comments
mundane@piefed.world · 63 pts · 116d
What has changed that allows them to do this, or are they just ignoring the HDMI Forum?
Davel23@fedia.io · 21 pts · 116d
I wonder what this means for the Steam Machine.
mephiska@fedia.io · 24 pts · 116d
I wonder if this means we can get VRR on the Steam Deck via official dock. That would be great.
Damage@feddit.it · 8 pts · 116d
Well, the article says we won't, so no need to wonder
Lemmchen@feddit.org · 6 pts · 116d
TheCornCollector@piefed.zip · 21 pts · 116d
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.
mrbigmouth502@piefed.zip · 7 pts · 116d
Title is clickbait. All that's been confirmed so far is FRL.
BlackLaZoR@lemmy.world · 1 pts · 116d
Typical Phorinix. Wil not elaborate what FRL is.
ryper@lemmy.ca · 16 pts · 116d
The first paragraph:
How much more of an explanation do you need?
BlackLaZoR@lemmy.world · 1 pts · 116d
TheCornCollector@piefed.zip · 3 pts · 116d
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
BlackLaZoR@lemmy.world · 2 pts · 116d
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.
defaultusername@lemmy.dbzer0.com · 3 pts · 116d
Fixed Rate Link.
BlackLaZoR@lemmy.world · 0 pts · 116d
Finally real answer!
snoons@lemmy.ca · -10 pts · 116d
don wan it
timewarp@lemmy.world · -10 pts · 116d
LOL... Surprised they aren't only doing so for their workstation cards like they do for everything else. The SR-IOV disablement is just greed at its finest. AMD also just released their new CPU with only difference 3D cache on the orher side & they're charging like an extra $300 for it.
Zangoose@lemmy.world · 45 pts · 116d
Not that I want to defend AMD but the reason they haven't been able to is because HDMI is a private spec and the HDMI forum specifically forbade them from releasing the driver they tried to publish a few years ago (even though the firmware with the actual implementation is in the GPU itself and still proprietary). That's why 2.1 works on windows and not Linux with the past 2 gens of AMD GPUs.