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Valve: HDMI Forum Continues to Block HDMI 2.1 for Linux (www.heise.de)
submitted 8 months ago by to c/technology@lemmy.world
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The HDMI Forum, responsible for the HDMI specification, continues to stonewall open source. Valve's Steam Machine theoretically supports HDMI 2.1, but the mini-PC is software-limited to HDMI 2.0. As a result, more than 60 frames per second at 4K resolution are only possible with limitations.

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[–] 17 points 8 months ago (7 children)

Can dp even translate to HDMI with a "dumb" adapter?

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  • [–] 21 points 8 months ago (2 children)

    yes, i have a dp to hdmi 2.1 cable that cost like 35€. it works fine except each time i get up from my chair the screen flashes white. and no VRR.

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  • [–] 21 points 8 months ago (2 children)

    it works fine except each time i get up from my chair the screen flashes white

    Wha... how? What?

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  • [–] 30 points 8 months ago (2 children)

    ESD. the air is extremely dry here

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  • [–] 2 points 8 months ago (1 child)

    There are a lot of passive adapters out there that seem like black magic at first.

    Obviously has drawbacks, but you can also do displayport/hdmi to VGA passively.

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  • [–] 7 points 8 months ago (1 child)

    I have a 25ft HDMI cable that works fine for everything except sometimes when I open a new tab in Firefox, the screen temporarily goes blank/no-signal for a couple seconds. Also sometimes when the dryer turns on.

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  • [–] 4 points 8 months ago* (last edited 8 months ago) (1 child)

    Can't be a passive adapter or else that would mean DisplayPort and HDMI have to protocol compatible. If they were then we wouldn't have this issue. Apparently I was wrong.

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  • [–] 13 points 8 months ago

    Nope. DisplayPort can adapt to HDMI or DVI passively. It won’t support the proprietary bullshit like HDCP, but it will be able to display video just fine. Pin 13 on DP is specifically used to detect adapters, so the output device can automatically change to using an HDMI protocol if it detects an HDMI adapter. This technically requires a dual-mode DP port to automatically adapt, but the vast majority of DP connectors produced in the past several years are dual-mode.

    But going the other direction (HDMI to DP) requires an active adapter, to strip out all of the proprietary HDMI-only bullshit.

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  • [+] -12 points 8 months ago (3 children)

    https://duckduckgo.com/?q=dp+to+hdmi

    Here's an already filled in Google search for you.

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  • [–] 27 points 8 months ago (1 child)

    Oh wow thanks! Alright everyone. We can all get off lemmy now. Turns out we can just look everything up online. No need to waste time talking to each other. Ugh!

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  • [+] -13 points 8 months ago (1 child)

    Or you can simply look up the answer to a super basic question in the same amount of time it takes to ask it in a forum so that you're contributing to the conversation, rather than lazily putting it on other people to answer.

    You can't look up everything online, but you can look up basic information fundamental to the conversation you're in.

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