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Displayport: A Better Video Interface

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Re: Displayport: A Better Video Interface

#11

Post by hadrien01 »

jsheard wrote: post #8
FinnKuhn wrote: post #7

Earlier quoted context omitted.

and USB-C allows the transmission of displayport over USB-C

It also allows the transmission of HDMI over USB-C, so you still have two competing standards

There's also Thunderbolt over USB-C that does DisplayPort, but it doesn't support all the same versions as DisplayPort over USB-C. And there's also USB 4 but I don't know/understand if it changes anything.

Re: Displayport: A Better Video Interface

#12

Post by vel0city »

jsheard wrote: post #8
FinnKuhn wrote: post #7

Earlier quoted context omitted.

and USB-C allows the transmission of displayport over USB-C

It also allows the transmission of HDMI over USB-C, so you still have two competing standards

It allows it, but can you actually buy any products for it?

https://www.notebookcheck.net/The-demise-of-HDMI-over-USB-C-...

> True USB-C to HDMI adapters are no longer going to be a thing. The HDMI Alt Mode is more or less history, and DisplayPort has won. Notebookcheck spoke to HDMI LA and the USB-IF about it.

> HDMI LA said that it doesn't know of a single adapter that has ever been produced. Similarly, at the USB Implementers Forum (USB-IF), people who are familiar with the certification process have yet to see a true USB-C to HDMI adapter.

Re: Displayport: A Better Video Interface

#13

Post by jsheard »

Salgat wrote: post #9
jayd16 wrote: post #6

Earlier quoted context omitted.

It'll be the USB-C port.

DisplayPort and HDMI's max length is 15m, compared to USB 3.1's 3m.

That very much depends on how much bandwidth you're pushing through the cable, older versions of HDMI could tolerate long cable runs but HDMI 2.1 is also limited to about 3m unless you use an expensive active optical cable. DisplayPort 2.0/2.1 is taking forever to come to market but it's going to be similarly limited in its high bandwidth modes when it does arrive.

Re: Displayport: A Better Video Interface

#14

Post by vel0city »

LoveMortuus wrote: post #10

I personally prefer HDMI or DVI, I don't like DisplayPort because on the display that I have, when I turn off the display the computer detects it as if I've physically disconnected the display, which then moves all the windows that I had open around and breaks my macros...

That's a failure of the display or your GPU, not necessarily the port. I've got several monitors with DisplayPort on a few different GPUs that don't do this behavior. Its not something inherent with DisplayPort.

Re: Displayport: A Better Video Interface

#15

Post by Aaargh20318 »

LoveMortuus wrote: post #10

I personally prefer HDMI or DVI, I don't like DisplayPort because on the display that I have, when I turn off the display the computer detects it as if I've physically disconnected the display, which then moves all the windows that I had open around and breaks my macros...

Sounds like an OS problem. When I do that it moves all open windows to the remaining display, but when I turn the other display back on it just moves them back. No special software installed for this, just stock macOS Ventura.

Re: Displayport: A Better Video Interface

#16

Post by jdiff »

jsheard wrote: post #8
FinnKuhn wrote: post #7

Earlier quoted context omitted.

and USB-C allows the transmission of displayport over USB-C

It also allows the transmission of HDMI over USB-C, so you still have two competing standards

The article mentions the death of HDMI altmode. Is it actually widely supported?

Re: Displayport: A Better Video Interface

#17

Post by Veliladon »

HDMI predates DP by 5 years, switching wouldn't enable any specific use case, and that 5 years head start means HDMI has market inertia.

Yes we should use it because it's better but the practicality? There's so much gear that's HDMI that would have to be replaced or require new active adaptors. It's so much industry and consumer effort for such a marginal gain.

Re: Displayport: A Better Video Interface

#18

Post by jsheard »

jdiff wrote: post #16
jsheard wrote: post #8

Earlier quoted context omitted.

It also allows the transmission of HDMI over USB-C, so you still have two competing standards

The article mentions the death of HDMI altmode. Is it actually widely supported?

It seems not, I missed that HDMI altmode is still stuck at HDMI 1.4 and they're not making any attempt to bring it up to HDMI 2.0. DisplayPort indeed won in that case.

Re: Displayport: A Better Video Interface

#19

Post by masklinn »

jayd16 wrote: post #6
BadBadJellyBean wrote: post #4

I just wish there was only one connector. Either HDMI or DP. I don't care.

It'll be the USB-C port.

For laptops it's pretty clearly USB-C with DP alt mode, just way too convenient to use a display as a charging hub.

Desktop CG manufacturers don't care and it doesn't really drive sales (NVidia has completely removed it, and AMD's tends to be pretty buggy, it's really just DP over a USB-C port) so you need conversion add-in cards (usually from your mobo manufacturer).

Also display manufacturers, standard connectivity seems to be 2xHDMI 1xDP and a USB-C if you're lucky (with a few cool oddballs providing 2xDP 1xHDMI instead). Pretty hard to do all-USB if that means you can't plug more than one machine to your display.

Re: Displayport: A Better Video Interface

#20

Post by Zekio »

jsheard wrote: post #8
FinnKuhn wrote: post #7

Earlier quoted context omitted.

and USB-C allows the transmission of displayport over USB-C

It also allows the transmission of HDMI over USB-C, so you still have two competing standards

no vendors implemented it, so whenever you are currently doing hdmi over usb-c it is actually hdmi over dp over usb-c
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