HDMI 2.2 is set to debut at CES 2025
tomshardware.com
tomshardware.com
https://hackaday.com/2023/07/11/displayport-a-better-video-i...
There are a couple of video cameras and viewfinders (particularly from BlackMagic) that have emerged in the last couple of years using DP.
DisplayPort, for most intents and purposes, has lost the format war. You buy a laptop - it’s HDMI on the side, not DisplayPort. You buy a monitor - DisplayPort is never an exclusive port on any model, but HDMI is.
USB-C -> HDMI is usually expensive because nearly nobody uses HDMI as alt-mode outside few old devices so you end up with frustrated users who try to buy cheaper converter and find out it does not work.
HDMI is also for various reasons very tightly bound with home entertainment ecosystem because the DRM is mandatory while it's optional in DisplayPort.
Meanwhile DisplayPort has effectively won the format war for computer displays, and on all newer display connectors.
Not on this planet - for the highest end displays, maybe. Almost every small business and government office I see is still using VGA.
That said, HDMI 1.0 being DVI-D in different connector means conversion to VGA is very easy, as DVI-D stream is essentially VGA data minus DAC step (including vsync blanking and overscan).
It's a similar port selection on even the highest end monitors: 40 Gigabit/s HDMI 2.1, or 26 Gigabit DP1.4. I'm unable to find a single DP2.0 monitor.
https://linustechtips.com/topic/729232-guide-to-display-cabl...
I'm personally on a 1440p240hz monitor. With HDR, this barely squeaks over DP1.4's bandwidth.
The display device provides DisplayID block id 0x28 "Tiled Display Technology" with description of tiling, which is then used on GPU side to properly configure framebuffer -> DP sources mappings so that from userland you see one display.
The DisplayID block also explicitly supports things like declaring bevels etc. if necessary.
I dont know where you are from but all Government Office and SME I have been to ( and I have been to a lot ) all have HDMI for their TV since at least 2020. They may have VGA lying around but they are not used. In fact the last time I went to an office that doesn't have HDMI port and only VGA was roughly 2016 or 2018.
I know a fair share of rancid conference rooms where the cabling is still 20 years old...
True, we will never see them on the TV, but on the computer it is all DisplayPort.
Edit: And a MacBook Air would have just the two DisplayPort on the left with no HDMI, plus headphone jack on the right.
The laptops USB-C ports probably speak DisplayPort though. There was another USB-C alt mode which carried HDMI instead but that spec was abandoned, DisplayPort is the de facto standard USB-C video protocol now.
Being able to put video, audio, power, and USB connectivity over one relatively common connector seems like the obvious choice.
I buy a laptop - it's USB only. No HDMI, DisplayPort, VGA, headphone jack or anything else. When was the last time you bought one?
I buy a desktop graphics card. 1 HDMI - for compatibility, you know - and 3 DisplayPort. The HDMI is port number 2.
Last time I used a projector it was DisplayPort or VGA. I brought brought both kinds of adapters just in case.
My newest monitor has power input, DisplayPort and VGA. No HDMI.
So it has no video output?
The HDMI versioning chaos did not help.
The worst is still USB 3.1 Gen 2.1 Hyper Giga Super Speed Mark II
Even us tech people find it difficult. Small rant - I have the M1 Max MacBook which comes with “USB4”. I remember at some point getting a SanDisk external “USB4” ssd which claimed 20Gb/s, you would think it should all work together. But no, apparently the ssd needed 3.2 2x2 support, which the Mac doesn’t implement, since it’s apparently only a optional part of USB4 spec…
One other funny thing - Apple’s page for “Identify the ports on your Mac” has 5 separate entries that are all USB-C shape. https://support.apple.com/en-us/109523
But I've never actually read a Thunderbolt spec, so I can't be sure exactly what disqualifies those "Thunderbolt / USB 4" from being advertised with a more recent Thunderbolt version number.
No one would listen. You wont even find people supporting these scenerio as a problem on HN. Before 2022, 99.9999% of HN and generally all tech comments somehow thought it will all be Thunderbolt speced.
What makes it even worst is that Apple falls into the same trap as the rest of Internet / Tech / HN. I can almost guarantee this wont happen under Steve Jobs.
Unfortunately that battle is long lost. The world will have to suffer enough pain before it can learn and do something.
But one of the neat things about DisplayPort is that it's a a packetized protocol, that many streams can go over. Which is why there can be multiple daisy chained monitors!
So hypothetically the computer could stream out all manners of high bandwidth data. It's been neat to see a USB4 adaption, where DisplayPort tunnels USB4 for data coming from the computer, and the aux channel is used as the 480mbit return channel.
I don't really have any knowledge of why the aux channel is regarded as not capable of multi gbit/s, and maybe that's not even true.
Given what a terrible inflexible trash porting of the past HDMI is though, sure makes me wish folks would do more with all the possibilities DisplayPort has. And it makes me really really wish consumer electronics would please please please offer some DisplayPort. Given that usb-c mandates DisplayPort as a required alternate mode video system, maybe possibly hopefully this will be some leverage that starts prying these HDMI rent seeker's stranglehold open.
Unfortunately working out a set of norms and expectations that are useful to users is harder than just making bits go over wires.
Another fun issue I have with it is that my Apple TV 4K will randomly (1 time in 3-4 hours?) tell the receiver to change input when I'm on another. I'm guessing there's some scheduled wake happening and it inadvertently treats it as a user interaction. Adds a nice element of difficulty to Elden Ring.
I heard tinny sound coming from somewhere behind me and was baffled when I approached the projector and heard sound coming from its tiny built-in speaker.
With the recent drama around HDMI vs. Foss drivers on Linux, I'm curious why haven't we seen that bigger push from TV vendors to support USB C display port.
Most of my monitors work with USB C, Even consoles like steam deck, a lot of high end phones seem to support USB C.
So... Are there any features of HDMI that USB C display port doesn't support?
The other way round, DisplayPort's Multi-Stream Transport allows connecting multiple displays to a single computer source.
This reflects the facts that HDMI originated from consumer electronics companies whereas DisplayPort is owned by VESA which started as an organization for computer standards.
That depends on whether or not you consider single-link DVI-D as the "very first version" of HDMI.
So the linux DisplayPort driver at least supports the feature, whether or not it's fully standardized/required.
Anyway, HDMI is for TVs and DisplayPort is for monitors. They're both entrenched enough that it doesn't make much sense to try to cross over.
HDMI world wants DRM because other than Kim Dotcom (who is highly problematic for other reasons) no one has dared to stand up to the MAFIAA goons.
Computing world wants DisplayPort and a hassle-free, high quality experience. DRM breaks that.
Also, since older HDMI was physically compatible with DVI ports, a lot of computers preferred to keep DVI ports...
- TV manufacturers are often (always?) members of the HDMI consortium, meaning they financially profit from each device that has an HDMI port.
- Manufacturers of devices with HDMI ports are heavily discouraged from also including competing ports like DP.
Also, lowest common denominator HDMI in TV format has HDCP decoder as the only complex part, you can theoretically drive a dumb panel with few fixed function ICs that aren't even related to HDMI. Simplest dumbest case you can advertise the bare minimum supported display setting in EDID, and plop few buffers and ADCs and drive an analog TV off it.
Meanwhile simplest possible DisplayPort implementations still requires that your display can handle packetized data sent over PCI-E PHY layer, with more complex data structures and setup information than "plop an I2C rom chip here, few ADCs and buffer logic here, and you've got HDMI without HDCP to analog CRT".
Personally I’m convinced it’s mostly because the display manufacturers want to discourage the use of TVs as monitors, in order to protect their margins on monitors.
8k monitors should be sub 1000 usd by now and standard for anyone working with screens. You can get that as a tv but not as a monitor. :(
Cost. USB c has much more overhead. For example, people expect they’ll be able to charge with it and have usb pass through.
Heck, it's still rare to find a TV where all HDMI ports are 2.1 (for years it was only LG, not sure if it's changed this year).
On a couple of 4K Samsung monitors I have, HDMI port 1 is HDMI 1.4 and HDMI port 2 is HDMI 2.0.
Couldn't be simpler. The HDMI version is on the port label. Something about the situation makes me chuckle.
The boss said to make sure it had an HDMI 2 port. The engineer could have interpreted it two ways, so they did both ways in one.
Waiting for a monitor for 5 seconds (often without knowing what it is doing or on which input it is looking) is such a bad UX.
Why do we need new HDMI when there already is DisplayPort for this?
https://forum.kicad.info/t/hdmi-pcb-edge-connector-for-raspb...
Never tried that with a DisplayPort connector.
That's not a reason to keep HDMI. Obviously the real reason is that HDMI makes money for the people selling it.
I always feel like those thick DisplayPort cables are going to rip the port off the PCB.
Even with HDMI it's an actual concern. There should be some rubber suspension on every port to allow for some torquing.
That being said, although creative, it’s a pretty terrible idea. PCBs are not meant to be edge connectors. Especially if they aren’t designed for it (ie using hard gold on the edge connector plating).
The other comment from @wtallis has a good point about electromagnetic interference (EMI). But I think it's shielded when it's plugged in, by the female connector.
Here’s a video https://www.youtube.com/watch?v=rZpHizpZSPQ showing a PC with this connector in action.
Maybe not a game-changer, but it’s an interesting idea to reduce port clutter without forcing a winner in the format war just yet.
It’s 2024. Why do TVs flash and stutter switching modes? It’s pathetic. Quick Media Switching partially fixes this. It makes TVs switch their frame rates fast, so you can go from 24 to 30 to 60 without noticing it. Nice right?
But that’s it. Need to switch resolution or go from normal to HDR? QMS doesn’t support that. Back to black screens.
Come on. This should be table stakes.
I didn’t see it mentioned in the article at all though.
DisplayPort and Thunderbolt are starting to make lengthier runs (7+ ft) tricky, which is still within the realm of cable management, particularly with hybrid standing/sitting desks.
Reasons:
- Easy to hook up to modern laptop (all MacBooks) that only have USB-C outputs.
- This allows your TV to become a hub.
- I have invest in a lot of high quality USB C cables rather lots of differ types of cables all of which requires either hubs, or built-in converters.
Can you hook up a USB C display to a iPhone or Android phone directly yet?
My ask of TV manufacturers:
Modern TVs should have built in cameras/microphones (or the ability to pull in a cameras via USB and mount it on top) to enable video conferencing so that my chromecast/Google TV device can run get me into Zooms/Google Meets without any other devices.
Your phone should have a video output inside the usb-c port.
(Yes, I realize that there's a video-over-USB thing with a similar name, but that's old heavily-compressed niche junk.)
what a mess. it’s like a parody skit…imagine how a layman would interpret all this.
[0] https://www.cablechick.com.au/blog/definitive-guide-to-usb-c...
https://en.wikipedia.org/wiki/USB-C#Alternate_Mode_partner_s...
Do you know anything about USB C and why there aren't any cables over 3m (10ft)?
And why these are 100$+ cables?
(Usb4/Tb3+ cables, capable of 40gbps like a hdmi2.1)
iPhone: yes.
https://support.apple.com/en-us/105099#:~:text=USB-C%20displ...
https://arstechnica.com/gadgets/2024/02/hdmi-forum-to-amd-no...
From the bug report [0], there was an update 5 months ago that discussions (at AMD) were still ongoing.
This isn't necessarily compatible with FOSS.
HDMI was deeply intertwined with the brave new world of Protected Media Path.
"For further information, call these people."