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Valve: HDMI Forum Continues to Block HDMI 2.1 for Linux (www.heise.de)
submitted 11 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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[–] 163 points 11 months ago (61 children)

Are people just forgetting it has a displayport also? Just ignore HDMI, they got greedy, onto the rubbish pile they go.

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  • [–] 64 points 11 months ago (6 children)

    DisplayPort absolutely does support audio

    DisplayPort supports a wide range of audio formats, including multi-channel audio like 7.1 surround sound, ensuring compatibility with various multimedia applications and delivering a robust audio experience directly aligned with the video output.

    https://www.anker.com/blogs/hubs-and-docks/do-display-ports-support-audio

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  • [–] 6 points 11 months ago (5 children)

    You seem knowledgeable, Mr. Vandelay. Perhaps you deal with imports and exports... if so on the topic of audio on DisplayPort, are you aware of any Receivers that will split the signal to send audio to speakers and video to your projector or monitor (TV but there are few)?

    Serious question about the receiver if you do know of any - it's come up in the last week while seeing the Valve HDMI news on Lemmy. I found some projectors that have DP, but no receivers and hoping someone here can!

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  • [–] 2 points 11 months ago (2 children)

    I know that there are some complicated configurations that you could use to get the audio feed from display port to your receiver,, like running it through a splitter that will strip out the audio and send it to your receiver separately. I'm pretty sure there are no mainstream AV receivers that will do what you want because the market is split between home theatre and PC, as mentioned elsewhere in this thread, and manufacturers need to be convinced there's a market for it.

    In that situation, I would connect the output device, in this case a PC, directly to the TV/monitor with DP, and run optical audio from either the TV or the output device to receiver.

    You lose some of the integrated control that HDMI-CEC gives you, so get a good universal remote that can adapt to this set up and get one-button source switching back.

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  • [–] 32 points 11 months ago

    I'm not sure where you're getting your information, but displayport absolutely supports audio. In most of the same formats that HDMI does as well.

    Also, I've only ever had issues with HDMI plugs. All the displayport plugs I've used had positive locks on them and have been the most reliable plugs I've ever had to use aside from BNC connections.

    You could perhaps have instead gone with "you don't find displayport on cheap consumer displays," because that's an accurate statement. That's a huge part of why this is a big deal.

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  • [–] 3 points 11 months ago

    I have an HDMI cable somewhere that stops working temporarily when there are changes in temperature, air pressure or planetary alignment.

    This is not an HDMI vs DisplayPort issue.

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  • [–] 99 points 11 months ago (17 children)

    The people who block HDMI for Linux are also the people who make TVs and other media stuff. So you may not be able to use displayport or hdmi just because some rich people decided so to make more profit.

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  • [–] 42 points 11 months ago (16 children)

    This is what I said the other day about this issue. Good luck finding a decent tv with display port! Those fuckers are rare and expensive!

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  • [–] 24 points 11 months ago (15 children)

    They are called monitors, and yeah expensive but then you don't get a "Smart TV" with tracking and bullshit.

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  • [–] 7 points 11 months ago (4 children)

    Nor do you get TV tuners. While most geeks probably couldn’t care less, any associated family do prefer to watch Great British Bake-off as it airs.

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  • [–] 2 points 11 months ago (9 children)

    Just told my elderly aunt to not buy a smart tv today!

    But do they make 40ish+ monitors?

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  • [–] 4 points 11 months ago

    They do, but they much more expensive than a smart TV, even though they have less components.. Because a Smart TV is sold for less because its providing the vendor access to you as a product to all of their 3rd party partners.

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  • [–] 3 points 11 months ago (4 children)

    I will add that you can also still get Westinghouse dumb TVs with included DVD player and USB video player, 3x HDMI and a tuner, but 1080p and Max 36"

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  • [–] 28 points 11 months ago (6 children)

    Basically no modern TV has displayport except for few that come with USB-C

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  • [–] 26 points 11 months ago (4 children)

    DisplayPort to HDMI adapters are quite cheap and don't add latency.

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  • [–] 6 points 11 months ago (2 children)

    Aside from practicality, might there be something that gets lost if you do this? (e.g. worse frame rate, quality or sth. else)

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  • [–] 17 points 11 months ago* (1 child)

    No, DisplayPort, DVI-D and HDMI use fundamentally the same protocol, HDMI just adds DRM which requires active adapters when one plugs in a HDMI source into a DisplayPort sink. DisplayPort to HDMI conversions are completely lossless and don't add latency AFAIK.

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  • [–] 1 point 11 months ago

    It might be possible to get into output wirelessly, it has a dedicated radio for video output so presumably if you just stuck an adaptor into your TV you could just cast to it. Could be quite a nice setup if you wanted it to be able to connect to both your computer in the study and your TV in the living room.

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  • [–] 15 points 11 months ago (7 children)

    The problem is that many TVs have HDMI, but no DP.

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  • [–] 10 points 11 months ago (2 children)

    Then buy a DP to HDMI 2.1 dongle

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  • [–] 7 points 11 months ago (3 children)

    Wouldn't an HDMI to DP cable work then?

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  • [–] 5 points 11 months ago (5 children)

    That's not really how it works given that so many devices have HDMI ports.

    If we expect to make hardware devices that are generally compatible with interfaces non-technical users use, then excluding an entire class of common modern interface spec isn't a great choice.

    It'll be fine for now but as the specs bump up inversion and HDMI changes over time is just going to get worse

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  • [–] 7 points 11 months ago* (4 children)

    but as the specs bump

    Eh, 4k is already at the point of diminishing returns. There are 8k displays for a while now, but nobody buys them.

    Rather, create 5k, please.

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  • [–] 2 points 11 months ago (3 children)

    I wish game devs knew how to optimize for storage better. Let me install HD instead of 4k games if I choose. I do the same thing for anime series because HD barely takes up any space at all.

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  • [–] 2 points 11 months ago (2 children)

    Ok but I need a pretty expensive active adaptor for my tv?

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