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Displayport: A Better Video Interface

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Re: Displayport: A Better Video Interface

#261

Post by fireflash38 »

NavinF wrote: post #144
tshaddox wrote: post #123

> However, I’d like to tell you that you probably should pay more attention to DisplayPort – it’s an interface powerful in a way that we haven’t seen before. Lines like that really show just how long it can take for standards to get on the radar of mainstream tech culture. I remember hearing about and being excited about DisplayPort's move to packetized digital video in college in 2008, and seeing the first Macs with…

> impression that it has been well-known and commonplace for hobbyist and enthusiast PCs for well over 10 years It is. For a long time DP was the only standard that could do variable refresh rate. Even today all high end monitors have DP while the cheapest monitors only have HDMI.

Which is ironic considering the cost of the HDMI port is likely higher than the DP one due to licensing!

Re: Displayport: A Better Video Interface

#263

Post by CameronNemo »

Blackthorn wrote: post #257
NewJazz wrote: post #194

Earlier quoted context omitted.

Do the USB devices have comparable round trip latency? That is where USB really hurts and where the Thunderbolt audio interfaces seem to fond their niche today. I'm looking forward to audio interfaces that can do USB4 wrapped PCIe, but for now I live with the latency on Linux.

RTL latency doesn't seem that bad on chips that are built for the purpose, like RME's. Just the off the shelf stuff might be less than ideal. If anything I think a problem is there's just overall too much slop in the whole chain, including the operating system, motherboard, whatever else. It's a little ridiculous that a $50 guitar pedal can easily get better RTL numbers than a $1500 computer system.

Linux has preempt_rt pretty conveniently accessible, and Pipewire has some useful tuning knobs, but my Steinberg UR44 can't seem to keep up.

Re: Displayport: A Better Video Interface

#264

Post by Dalewyn »

metaphor wrote: post #199
Veliladon wrote: post #17

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.

> HDMI predates DP by 5 years... - HDMI v1.0 initial release = 2002-12-09 - DisplayPort v1.0 initial release = 2006-05-01 To be sure, just under 3.5 years; HDMI rolled into v1.3 a month after DisplayPort v1.0 saw the light of day. Agreed on the impact of market inertia.

HDMI's marketshare has nothing to do with its headstart: HDMI is backed by the entire entertainment industry and was designed for televisions, while DisplayPort is backed by VESA and other computer hardware manufacturers and was designed for computer monitors.

For every computer monitor there are hundreds if not probably thousands of televisions.

HDMI's marketshare has everything to do with who the players involved are and just how much weight they have to throw around. Even computer hardware generally have more HDMI ports than DisplayPort ports.

Re: Displayport: A Better Video Interface

#265

Post by jwells89 »

amelius wrote: post #262

Can we please get monitors that can find their signal within 100ms? Can we please get monitors that communicate their orientation (portrait/landscape etc.) to the computer?

The Apple Studio Display autodetects rotation and lets the connected computer know so it can adjust the picture accordingly, but it connects over Thunderbolt. It should be possible for monitors to do this over USB-C too, but I’m not sure about plain DisplayPort or HDMI.

Re: Displayport: A Better Video Interface

#266

Post by theodric »

jwells89 wrote: post #265
amelius wrote: post #262

Can we please get monitors that can find their signal within 100ms? Can we please get monitors that communicate their orientation (portrait/landscape etc.) to the computer?

The Apple Studio Display autodetects rotation and lets the connected computer know so it can adjust the picture accordingly, but it connects over Thunderbolt. It should be possible for monitors to do this over USB-C too, but I’m not sure about plain DisplayPort or HDMI.

sigh

Ok FINE I will move the goalpost

I want all that in a monitor that doesn't cost more than a typical modal monthly income in Europe

Re: Displayport: A Better Video Interface

#268

Post by deergomoo »

EVa5I7bHFq9mnYK wrote: post #155
jayd16 wrote: post #6

Earlier quoted context omitted.

It'll be the USB-C port.

I recently switched DisplayPort connecting my laptop to the monitor for USB-C, didn't see any difference, except now I get video (4kx60hz, max for my monitor), audio, can connect mouse and keyboard directly to the monitor, and the cable is thinner and lighter. Am I missing on something?

Don’t forget power delivery! Having a truly one-cable docking setup is a godsend if you need to switch between devices regularly.

Re: Displayport: A Better Video Interface

#269

Post by deergomoo »

jwells89 wrote: post #265
amelius wrote: post #262

Can we please get monitors that can find their signal within 100ms? Can we please get monitors that communicate their orientation (portrait/landscape etc.) to the computer?

The Apple Studio Display autodetects rotation and lets the connected computer know so it can adjust the picture accordingly, but it connects over Thunderbolt. It should be possible for monitors to do this over USB-C too, but I’m not sure about plain DisplayPort or HDMI.

> it connects over Thunderbolt

Not exclusively—it supports regular DP Alt Mode, though no idea if those advanced features also work.

Re: Displayport: A Better Video Interface

#270

Post by deergomoo »

amelius wrote: post #262

Can we please get monitors that can find their signal within 100ms? Can we please get monitors that communicate their orientation (portrait/landscape etc.) to the computer?

> Can we please get monitors that can find their signal within 100ms?

TVs too—with various HDR standards, VRR etc becoming more popular these days I quite often find myself staring at a blank screen for 5-10s

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