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Displayport: A Better Video Interface

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Re: Displayport: A Better Video Interface

#371

Post by kaashif »

loup-vaillant wrote: post #347
unixhero wrote: post #341

Earlier quoted context omitted.

It should be a national citizen identity logon system, which a voting web site uses, everyone can vote from home or from a laptop provided by the independent voting facility.

Sounds nice, but computer based voting systems, no matter how secure, clean or simple, are fundamentally opaque to the average citizen. That alone undermines the very democracy it tries to support. Paper based voting systems may be bloody tedious but they’re simple, and anyone can participate. As a programmer myself, I have to say no to electronic voting systems. We need to keep it low tech.

Also, they may be opaque even to software engineers, it's not like we have magic powers to look at a physical computer and know what code is running.

Even if the code is released:

(1) Who can read and understand tens or hundreds of thousands of lines of probably not very comprehensible code? Not many people can and even fewer will.

(2) Is the code running on the machines the same as the published code?

I don't even know what code is running on my phone or laptop right now.

Re: Displayport: A Better Video Interface

#372

Post by gh02t »

eimrine wrote: post #360
zsz wrote: post #326

Earlier quoted context omitted.

I've run into problems repeatedly when it came to DP cables. The issue is always the same: lack of enforcement and no barrier to entry allows for too many entrants, whose motives are up to consumers to discern, wasting time and money in the process. What I originally saw as a benefit of an open standard, as it turned out, was in fact a benefit (for consumers like myself) of the closed/high priced standard—which ended…

I hate the lock on DP cables since I have managed to break 2 of them when HDMI just slips out in that situation. DVI also has a lock (2 screws) but for some reason their connectors never break, why did DP has degraded that is a very big question for me.

You can buy cables without the lock tabs. They work well and still stay in just fine, making me wonder why the stupid infuriating tabs are even necessary. I replaced all of mine after busting my knuckle open wrestling with a locking cable in a tight space.

Re: Displayport: A Better Video Interface

#373

Post by someguydave »

loup-vaillant wrote: post #347
unixhero wrote: post #341

Earlier quoted context omitted.

It should be a national citizen identity logon system, which a voting web site uses, everyone can vote from home or from a laptop provided by the independent voting facility.

Sounds nice, but computer based voting systems, no matter how secure, clean or simple, are fundamentally opaque to the average citizen. That alone undermines the very democracy it tries to support. Paper based voting systems may be bloody tedious but they’re simple, and anyone can participate. As a programmer myself, I have to say no to electronic voting systems. We need to keep it low tech.

If a voter is too inept to properly operate cryptography, can it be said that their vote is legitimate? Seems to me that not everyone should vote.

Re: Displayport: A Better Video Interface

#374

Post by feitingen »

Vogtinator wrote: post #351
alfiedotwtf wrote: post #344

Earlier quoted context omitted.

Do you know what sucks? DisplayLink. It's 2023, and the best we have for 3 monitors (MacBook Pro, and 2 external monitors) is basic screen scraping with software drivers if you want to use a single cable... otherwise you have to fall back to 2 cables (one for power + first monitor, and one HDMI). The other reason why DisplayLink sucks is performance (or lack of) - what they don't tell you on the box. Video is like 16…

This is only because MacBooks do not support MST. On all of my non MacBook laptops I can use multiple monitors over USB-C.

Macbooks (at least the intel ones) support MST with another OS like Linux.

The missing support is in MacOS.

Re: Displayport: A Better Video Interface

#375

Post by mixmastamyk »

zsz wrote: post #326
qwertox wrote: post #240

This is a really well written article. If you haven't bothered reading about DisplayPort because you knew VGA, somewhat knew DVI and thought that HDMI is the culmination of it all, where then DisplayPort is just some further kind of evolution, this article does a really good job at explaining how DP is very different and something new, something worth knowing about. The core sentence which made me actually read the a…

I've run into problems repeatedly when it came to DP cables. The issue is always the same: lack of enforcement and no barrier to entry allows for too many entrants, whose motives are up to consumers to discern, wasting time and money in the process. What I originally saw as a benefit of an open standard, as it turned out, was in fact a benefit (for consumers like myself) of the closed/high priced standard—which ended…

Can be used over USB-C apparently, which should alleviate your physical complaints.

Re: Displayport: A Better Video Interface

#376

Post by askura »

nfriedly wrote: post #229
askura wrote: post #122

The only downside with DP is just devices that actually have that versus HDMI / Mini hdmi. This post though has made me annoyed as DP is clearly the better standard.

Agree with you there. I'd be much happier if my Raspberry Pis, cheap USB-C hubs, cheap monitors, etc. all had DP instead of HDMI. It's extra annoying when you realize that you're paying more for royalties and sometimes additional hardware (e.g. in a USB-C hub that uses DP internally but converts to HDMI for the output) just to get an inferior interface.

Honestly, it's going to be one of those things I champion now whenever it comes up in conversation haha. Very solid points.

Re: Displayport: A Better Video Interface

#377

Post by loup-vaillant »

someguydave wrote: post #373
loup-vaillant wrote: post #347

Earlier quoted context omitted.

Sounds nice, but computer based voting systems, no matter how secure, clean or simple, are fundamentally opaque to the average citizen. That alone undermines the very democracy it tries to support. Paper based voting systems may be bloody tedious but they’re simple, and anyone can participate. As a programmer myself, I have to say no to electronic voting systems. We need to keep it low tech.

If a voter is too inept to properly operate cryptography, can it be said that their vote is legitimate? Seems to me that not everyone should vote.

Yeah, I’ve heard variations of that argument spoken non-ironically. Opens a whole can of worm. I’d rather assume, barring special circumstances, that anyone old enough is able to do politics (voting, being elected, being randomly drafted in a commission or jury…). With the right mechanisms groups are smarter than we give them credit for.

Re: Displayport: A Better Video Interface

#378

Post by cesarb »

6D794163636F756 wrote: post #220
Ajedi32 wrote: post #210

> A carefully shaped money-backed lever over the market is absolutely part of reason you never see DisplayPort inputs on consumer TVs, where HDMI group reigns supreme, even if the TV might use DisplayPort internally for the display panel connection. Curious about this. Is the HDMI standards group engaging in anti-competitive behavior to prevent DisplayPort from taking over on TVs? I've always assumed it was just mome…

Another key is that HDMI carries more power than display port. There are dongles for your tv that can get all the power they need from an HDMI cable. Not so far display port. When it comes to use case, display port is better when connecting a fully independent device to a display and HDMI is better for connecting a peripheral to a system

> Another key is that HDMI carries more power than display port.

A quick look at Wikipedia's article for both standards shows that you're wrong:

  DisplayPort: 3.3 V ±10%, 500 mA
  HDMI: 5 V, 50 mA
Which means at least 1500 mW for DisplayPort, and only 250 mW for HDMI. So no, the DisplayPort cable carries more power than the HDMI cable.

And when you think about it a bit, it makes sense that DisplayPort carries more power than HDMI: one of the use cases for DisplayPort is an active converter to HDMI, which needs power for both its electronics and the HDMI cable.

Re: Displayport: A Better Video Interface

#380

Post by zerkten »

dogline wrote: post #120
zerkten wrote: post #95

Earlier quoted context omitted.

I have a TESmart (TES-HDK0402A1U-USBK) from https://www.amazon.com/gp/product/B08259QL5J/ref=ppx_yo_dt_b... which works fine in this regard. This was probably the 4th DisplayPort KVM I tried due to keyboard issues with the others.

I'm looking too, but that one linked has HDMI out only, with DP and HDMI in. Don't you lose the benefit of DP with this setup?

It has been OK for my needs, but I think you are best getting the KVM and returning if it doesn't meet your needs. I'd probably be more concerned if this was for my photography or gaming machine. For a work setup it has been fine for me.
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