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Displayport: A Better Video Interface

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Re: Displayport: A Better Video Interface

#411

Post by zorgmonkey »

madars wrote: post #246
angry_octet wrote: post #242

Earlier quoted context omitted.

HDCP can't really be stripped, if it's on then something is an HDCP receiver. For v1.4 signals you can probably get something with the leaked key, but not for v2.2 as yet. HDCP itself needs to be licensed in order to generate it, and that licence is only available to HDMI Adopter companies. However there is code to get some chipsets to turn it on: https://github.com/intel/hdcp Grab it now before Intel deletes it comp…

There are devices that will give you HDCP 2.3->1.4 conversion for compatibility reasons (or maybe wink-wink reasons), and after that you can use a HDCP 1.4 stripper. There are also devices that will strip 2.2 outright (they are marketed as HDMI splitters but, oops, one of the two outputs has unencrypted signal, an honest mistake); not sure about 2.3 though. Completely agree that HDCP makes everything harder, but in t…

My understanding is that the downside of those downgrade devices is HDCP 1.4 will leave you stuck without 4k and HDR for content that uses HDCP.

Re: Displayport: A Better Video Interface

#412

Post by someguydave »

loup-vaillant wrote: post #377
someguydave wrote: post #373

Earlier quoted context omitted.

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.

This "can of worms" is why democracy will fail and a Caesar will eventually ride into town and promise all kinds of things to the median voter. If it is considered immoral to hold voters to any standards, why would it be immoral for politicians to lie, cheat and steal?

Re: Displayport: A Better Video Interface

#413

Post by angry_octet »

zorgmonkey wrote: post #411
madars wrote: post #246

Earlier quoted context omitted.

There are devices that will give you HDCP 2.3->1.4 conversion for compatibility reasons (or maybe wink-wink reasons), and after that you can use a HDCP 1.4 stripper. There are also devices that will strip 2.2 outright (they are marketed as HDMI splitters but, oops, one of the two outputs has unencrypted signal, an honest mistake); not sure about 2.3 though. Completely agree that HDCP makes everything harder, but in t…

My understanding is that the downside of those downgrade devices is HDCP 1.4 will leave you stuck without 4k and HDR for content that uses HDCP.

Yes you can extract plaintext 1080p but not 4k HDR.

Re: Displayport: A Better Video Interface

#414

Post by unethical_ban »

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.

Same reason I advocate for ranked choice voting instead of other even better methods of choosing a winning candidate. Some of them require matrix multiplication.

(I still support electronic voting though).

Re: Displayport: A Better Video Interface

#415

Post by Someone »

wang_li wrote: post #404
Someone wrote: post #401

Earlier quoted context omitted.

> When you vote from home I can show up and put a gun to your kid's head and tell you to vote for Pedro If you could do that at a scale large enough to affect the result, I would think you could also do that at each ballot box and make the vote counters report the results you want them to report. Also, if you could do that at scale, why would you bother with elections at all? IMO, the main problem with digital voting…

In the 2020 election one of the seats for the House of Representatives had an initial margin of victory of six votes. After recounting it was something like twenty. And another had a final margin of victory around one hundred.

I doubt anybody could tell it was going to get that close. The uncertainty likely ranked into the thousands, if not tens of thousands of votes.

I think few fraudsters will be happy with slightly increasing their odds by swinging the vote by a few hundred votes. Instead, they’ll want almost certainty, if not complete certainty.

Re: Displayport: A Better Video Interface

#418

Post by maria1998zx »

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…

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Re: Displayport: A Better Video Interface

#419

Post by maria1998zx »

alfiedotwtf wrote: post #344
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…

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…

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