this post was submitted on 02 Mar 2025
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Is it known yet if the 9070 (XT) support HDMI2.1 in Linux (feddit.nl)
submitted 4 days ago by [email protected] to c/linux_gaming
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I hope AMD fixed this on their side, maybe by implementing it in hardware. Does anyone have a source? I've only seen reports of HDMI 2.1b support not specifying "Windows-only". Fingers crossed.

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[–] Vash63 20 points 4 days ago (1 children)

It's not known either way yet, but unless they offloaded it to a separate firmware like Nvidia or Intel, it's not possible for them to do in Linux due to HDMI patents. The way the other vendors avoided this is to use a separate component that does everything internally, so none of the code is in the drivers. AMD doesn't do that historically, and thus can only support such features with closed source drivers/OS.

[–] [email protected] 26 points 4 days ago (2 children)

Jep. People need to understand that HDMI is bad. You're literally paying for worse service. Just use DP. Open and better.

[–] [email protected] 11 points 4 days ago (2 children)

I mean, I agree. But I've waited long enough for a good OLED TV with DisplayPort. I don't get why they don't just add one.

[–] [email protected] 4 points 3 days ago

TV manufacturers are part of the ~~cartel~~ HDMI forum, which benefits from there being a big ecosystem of non-member devices that are forced to have HDMI ln them and pay licensing fees for it.

[–] just_another_person 12 points 4 days ago

Royalties. It's been 10 years since DP became capable of carrying audio on the same cable, so that's not an excuse anymore.

There are larger format monitors that have both, but I don't think they're configured in a way that makes them very cost effective.

[–] NoXPhasma 9 points 4 days ago

Time for DP to be used on more devices, like TVs and such.