You can't make an open source HDMI 2.1 driver

Re:You can't make an open source HDMI 2.1 driver by Antip0dean on Friday March 01, 2024 @04:21AM (#39560106)

It is. And this is the likely to be the solution to this issue. DP is a VESA standard, and its Dual Mode feature supports passive adaptors for, among other things, HDMI displays. I use one on my 20-series RTX card.

A cheap DP-HDMI dongle makes all this go away. As long as VESA doesn't behave the same way, anyway.

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Re:You can't make an open source HDMI 2.1 driver by prmoustache on Friday March 01, 2024 @05:54AM (#39560588)

That works somewhat well for 1080p but all adapters I have seen max out at 30fps for 4K video. Might be ok for movies but gamers might not like it.

55" monitors with DisplayPort do exist but they are only a selected few and seem to cost 4 times the price of a 4K TV.

So 4K is still pretty much a luxury that I will just ignore for now.

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Re:You can't make an open source HDMI 2.1 driver by dtx1 on Friday March 01, 2024 @04:24AM (#39560116)

> A cheap DP-HDMI dongle makes all this go away. As long as VESA doesn't behave the same way, anyway.

You can even get cables that are DP on the input and HDMI on the output with minimal bulk.

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Re:You can't make an open source HDMI 2.1 driver by oskarw85 on Friday March 01, 2024 @09:40AM (#39562204)

But this feature works by transmitting HDMI signals so you still need to implement the software part in question.

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Re:You can't make an open source HDMI 2.1 driver by paulmd on Friday March 01, 2024 @12:15PM (#39563977)

No, it doesn’t. Hdmi alt mode doesn’t exist in the real world.

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