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DVI Daisy Chain

Epic Kludge Photo - DVI Daisy Chain

Submitted by: DrTall via Submit a Kludge!

Rule 34 people. – Ms. Fix-It

Favorite Comment:
Fixer Dogmeat says, “So does anyone else here suddenly have the urge to play the ‘Sex degrees of separation’ game? SIX! I meant SIX degrees!!”

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» 76 Kludgers Kludging

  1. Jennifer says:

    That’s awesome. I’d do that.

  2. JB says:

    With such a combination of male and female plugs, it’s called a DVI ‘gang bang’!

    • Jompe71 says:

      No expert, but it looks like a VGA gang bang to me.
      Since there seem to be more males than females involved, could VGA perhaps stand for “Vacant Gi-Joe A**” ?

      • kc/cc says:

        You underestimate the power of Oprah, who now has mandated the term “vajayjay” (aka:VJJ) be used even in medical publications.

      • tahrey says:

        It’s a VGA-DVI-gender changer gang bang. So all the main fetishes are covered.

        Also as you’ve got at least three connectors acting as sandwich between the outer two, it could well be a daisychain. or a clusterf*ck. or maybe just a man-train.

  3. AlixeTiir says:

    they clearly need binder clips to sort the males and females.

  4. D says:

    The real WTF is how somebody has mistaken what is ultimately VGA-to-VGA for DVI.

    • pixie says:

      thank you for being smart!

    • cantab says:

      TRWTF is that this is There I Fixed It, not TheDailyWtf.

    • Dan says:

      Well sir, first we must recognize that VGA is a resolution and NOT a cable type. HD-15 or DB-15 is the proper connection type. Second, there’s nothing about this that is daisy chained. It’s a franken-cable to be sure, but not daisy chained. Third… wtf? Really? What is this PSAV or something?

      • tahrey says:

        1. Sort of true, but you’re once again ignoring the “hoover effect” (or as penny arcade would have it, kindle effect). The DB-15 connector for analogue RGB video was introduced with the VGA standard and was retained for all the superceding SVGA, XGA, etc standards that remain compatible with it, therefore for anyone except the most pedantic of souls it’s universally called a “VGA connector”.

        2. It IS daisy chained. What part of that term being applied to this gaggle of stacked standards-converters are you having trouble with? True there’s no visible, traditional cabling running between them, but the concept is there. Replace the adaptor blocks with adaptor cables and you have exactly the same thing, just nowhere near as compact.

        3. I’d say this is probably someone who really, really needed a VGA gender changer for some reason, but only had VGA DVI-A converters and a DVI-(A/D) gender changer. I’ve done worse than this, at work, to avoid having to pay ludicrous sums for a company’s official USB-to-RS232 + power adaptor.

  5. Gwinn says:

    Im sick of these fake kludges. This is not going to work.

    If you connect a VGA cable to a DVI adapter, it changes the positions of the leads and it only works if your video card is capable of sending analog signals over a digital plug. However, if you connect them like this, the signal going through one lead on side will travel down a different lead on a different side and the signal will not go through correctly.

    • bob_super says:

      Every video card has the _dedicated_ analog signal outs. _If_ all the dongles also have them and are designed properly, you can stack them at will.

      • Kwyjor says:

        I agree, it could feasibly work. Besides, even though it would make sense, we don’t know for sure if those are VGA-to-DVI adapters and not some other kind of wacky 25-pin adapter.

        Nonetheless, I’ve found that when you start doing things like this, the signal can degrade to the point that the monitor no longer gets properly detected by the video card, and that can lead to all kinds of inconvenient mess.

        • Dan says:

          Indeed Kwyjor, there is a 3db loss at each connection point. At the very best, this has created many points of failure. However, I would like to point out that the 25pin connector theory does not apply. There aren’t any HD15 to wacky 25-pin adapters. Or are there….

          • Jayesjay says:

            3 dB loss is half the signal. No way.
            You get a 3 dB loss in (eg) a two way RF splitter.
            You would also get a small loss at RF due to reflection if the connectors are mismatched, but not at signals of the frequencies carried by these cables.
            As another poster implied, he ran out of gender benders. Had to use a 25 way (or DVI, or somesuch) gb with adaptors.
            All this from ancient memory.

          • tahrey says:

            What? Are you being serious?
            I demand graphs and oscilloscope / multimeter readouts if you’re going to make crazy ass claims like that.

            6db if you split the signal two ways, ja…

            And there’s a crazy adaptor between pretty much any standard if you look hard enough. You can certainly get 21 pin SCART to VGA for specialist purposes even thought their actual signal specs are strictly speaking incompatible.

            We don’t know that the connectors inside those shells are actually 25-pin, mind. (Or 21-pin as per DVI-D. Or 17-pin as per DVI-A) — as we can’t see ‘em, could be anything.

    • cosmitchny says:

      Seriously, does it really matter if it works or not? It’s a kludge-world, rules of our impeccable humans’ world don’t apply here.
      Most of kludges look like they shouldn’t work, but mysteriously they do!

      And God bless all kludge creators for their creativity, duct tape for its stickiness, and zip ties for …zippiness(?)

    • Jompe71 says:

      Exactly what I’m telling my girlfriend (with no result what so ever).
      You cannot connect a male to a washing machine. It just won’t work!
      If you send male chromosome to the machines switches and handles it’s going send a bright/colored mixed laundry signal.
      It’s going lead to a travel of the male in a different position from the correctly pointed out liqueur store to a GAP dito!
      On the other hand, the clerk may be awesome, so it could turn out in DaVId switching into a ViGiliA side…

    • Creamers says:

      It is very possible since dvi is the same as VGA but with more pins. The other ions are not in use in this chain so as long as the video card has enough power it will work.

      Also failblog this is VGA not dvi

      • tahrey says:

        New rule: Smoke crack AFTER going online.
        DVI =/= VGA + more pins.
        Ions = what? And what’s the video card “power” got to do with the price of fish?
        And it’s both VGA _AND_ DVI. In fact, more DVI than it is VGA (3 vs 2).

    • tahrey says:

      Summary of all the preceeding replies: WTF are you on about. I think you’ve totally misunderstood how VGA/DVI converters, and adaptor blocks in general, work.

  6. Karlisme says:

    Gwinn – Incorrect.

    So long as all the adapters their are DVI-I, the signal will pass through on the RGBHV pins and totally ignore the rest.

    This would work absolutely fine.

    Karl P

    • Karlisme says:

      *their = there

    • Dan says:

      Karlisme: No sure, it would not work absolutely fine. Would it work? Yes. Absolutely fine? No one should say such a thing. Any vidiot should know better.

    • tahrey says:

      DVI-A or I, surely? ;)

      I’ve got a ton of redundant DVI-A -only adaptors in my office that came delivered with some new PCs. They exist. Their only purpose is to enable the dualhead function, that we don’t use, for two VGA monitors (they’ve got one VGA and one DVI-I plug each… we just hook up to the VGA and carry on). Presumably they can also be used on the other end of the monitor cable if we want to run 2x DVI-(I-)only monitors. Not that there’s hardly any of them in the world.

  7. DrTall says:

    @Gwinn: Sorry, but you’re wrong. My monitor is set up like this right now. The other end of one of the VGA cables is another VGA->DVI-A converter. :)

  8. Darkenna says:

    I used to do this to serial cables all the time.

    “Serial Gang Bang” sounds so much better than “DVI Gang Bang”, anyway. Besides, those are VGA cables.

  9. Chris says:

    Gwinn is correct – this wouldn’t work. I’m a broadcast engineer and have made far more impressive adapter chains to make audio connections in a pinch, I just haven’t had a camera around.

    • Just_Some_Guy says:

      broadcast engineer – but no camera – so radio broadcast
      sorry, no picture = no glory

    • Dan says:

      Hey ah…. Chris? Yeah. I’m a high res data engineer. This would work. Not well, but it would.

    • tahrey says:

      It’d totally work. The VGA signal is actually pretty robust. So long as the sync signals survive you’ll get SOMETHING onscreen. Might not be pretty, but it’ll be legible (will get dimmer, and blurrier, and lose colour registration, but be usable and still better than composite video). A plain single-connector-each-end 50ft cable run would deal more damage.

  10. Chris says:

    Dammit, maybe it will… I’ll have to go test it out and let you know.

  11. hurculeasz says:

    This is the true meaning of ” 3 degrees of seperation”

  12. W Sanders says:

    A connection almost always either requires a null modem, or else it doesn’t.

  13. Gerard says:

    Its something like this, from left to right.
    -VGA Cable (male duh) connects to a female VGA and male DVI.
    -Then the male DVI connects to a female-female DVI.
    -The female-female DVI, connects to a male DVI – female VGA.
    -The male DVI-female VGA, connects to a VGA Cable (male duh)
    ——–
    All that could have been solved with a larger cable or a female-female VGA…

  14. Dogmeat says:

    So does anyone else here suddenly have the urge to play the ‘Sex degrees of separation’ game? SIX! I meant SIX degrees!!

    • Alpha-Beta says:

      Well, as it turns out, ‘sex’ IS ‘six’ in latin so you were right in the first place.

      • kc/cc says:

        Yeah, but we all just hate it when Dogmeat switches back and forth into Latin. Although Latin does make some things sound nobler around here… ;)

  15. Pat says:

    When you need that one, extra inch.

  16. haroon says:

    A daisy chain is when you chain devices together. This is just adapter kludge.

  17. John says:

    It seems quite likely that there is no DVI at all. The adapters change from a high density 15-pin d-sub connector commonly used for VGA to a full size 15-pin d-sub used for older monitors (looks like a joystick or midi port connector). I’m sure it worked fine.

  18. dono1 says:

    DVI, VGA, RGB… it’s all irrelevant because this kludge is actually a flexible hula-hoop made out of a single computer cable and a handful of adapters.

  19. Fair Weather Artist says:

    …another one of those moments on “there, I fixed it.” I know this is supposed to be a ‘bad’ example of repair work. However, here is another picture that looks perfectly reasonable to me…No wonder the IT guys at work flip coins when I submit a help desk ticket…

  20. Aaron says:

    That’s not a daisy chain…

  21. Al says:

    This contraption just broke my mind…

  22. Recneps says:

    Oh, I’ve seen this one. It’s crude, but you really can’t expect much from something with a low budget. The DVI tells the VGA he’s there to lay some cable. Then a bus breaks down and-…you know, it’s simpler if I just draw a diagram.

  23. Cliff says:

    They ran out of simple gender changers? pfft!

  24. Mabinogius says:

    Epic techy belt

  25. Luciano says:

    Star Date 124,585

    - Captain, we found a crack in time!
    - Oh? I see a disaster temporal VGA -> DVI DVI DVI -> VGA!
    - Yes! The signal is delayed a few milliseconds to the monitorVGA

  26. Scorpion says:

    Well Sometimes you need this little extra cm’s to connect your Laptop to a Beamer ;)

  27. Keith says:

    What’s wrong with this? It’s the same way plumbing works!

  28. Cozz says:

    the foot bone connected to the ankle bone, the ankle bone connected to the shin bone, the shin bone connected to the knee bone….

  29. cmakeng says:

    How many times can you do the gender bender before it finally falls off?

  30. Connor says:

    Something tells me this isn’t going to be HDCP compatible. Or is it only nerds like me who notice this?

  31. cheesebrrgrr says:

    Before I commented, there were 69 comments.

    • TheAntiCat says:

      And if all that were to happen on 420, I think it would be funnier still. (But I’m also drunk right now, so everything is funny.)

  32. RaptorF22 says:

    Arghh!!!!
    I need one of those!!!!!
    I don’t have a long enough HDMI cable and I have two RGB cables that, combined, would reach to my HDTV so I could use it as a monitor!!!!!
    That is exactly the type of thing I would do!!!!!

  33. Rebekah says:

    Doesn’t anyone else think this would make an awesome belt?

  34. Alcoholic1 says:

    ahahah I have a similar set-up…. though not quite as bad.


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