Funny enough... HDMI CEC is still not perfect in my experience. For the longest time, if I powered on my Mac mini and not power on the TV manually, it would actually cause the TV to crash and force a reboot. It was really strange behavior.

> HDMI CEC works pretty decent these days, all the kinks have been worked out over the years and the only time it bugs out is if you use Chinese brands

I don't know. I have an LG TV and it does not support turning the display on/off with HDMI CEC. Everything else seems to work but it intentionally ignores those commands.

Is there any reason CEC can't be implemented over DisplayPort?

Brightness control on external monitors has never been supported in Windows though, partially due to issues with displays that have poor write endurance on internal storage.

nothing stops cable makers from making the same for DP

I hate noise from the PC, so I've sited my PC under the desk at the opposite end of the room to where I sit (so about 3.5m away). I have a pair of 5m DP cables running to my 2 ultrawide monitors without any problems at all, so it seems if you buy decent cables it just works with DP too.

The only potential issue is that they seem to be slow waking up from sleep. I've never been interested enough to investigate if moving the PC closer with shorter cables fixes that, or whether it's just an issue with having 2 monitors. I think the underlying cause is actually just because it's Windows and that one monitor (they're supposed to be identical) seems to wake up earlier than the other, so it briefly flashes on, then goes black while it reconfigures for 2 screens and then on again.

But anyway, my 5m cable runs seem fine. They weren't especially expensive nor especially cheap cables, IIRC around 10-15 GBP each.

You wouldn't pirate a car, why would you pirate a driver!

one day you wont have to

>Valve strictly adheres to open-source drivers, but the HDMI Forum is unwilling to disclose the 2.1 specification.

There are differences but man you for sure picked the most incorrect one - 4K say 42" OLED TV and same dimension PC gaming screen have exactly same pixel density, there is no subspace magic.

I think most graphics cards nowadays come with roughtly 3 DP ports and 1 HDMI port. It might be different for things like the Multi-media cards that are on the low-low end of the spectrum (think of GT 730 level in a generation) might have more HDMI ports since they are more intended for such an audience.

No, they don't put DP on because every $ of hardware they fit to the TV needs to provide value. DP requires a large board component that may need manual handling, circuit traces (+ decoupling) and silicon on the chip to interface. It then requires software support in the stack and that needs testing/validation.

The percentage of people who will actually use DP to connect their TV vs HDMI is tiny. Even people who do have DisplayPort on their monitors will often times connect it with HDMI just because it's the more familiar connector. I spent a decade working in that area and we literally were debating about spending cents on devices that retailed for hundreds, or thousands. The secondary problem that drives that is that ~90% of TVs sold use the same family of chips from MStar, so even if you wanted to go off-track and make something special, you can only do it from off-the-shelf silicon unless you pay a fortune for your own spin of the silicon. If you want to do that then you better commit to buying >1m chips or they won't get out of bed.

HDMI forum was founded by mostly TV manufacturers, they're not interested in constraining the market in that way. It's all just been market consolidation and making TVs cheaper through tighter integration.

> That HDMI Forum does not allow TVs to be sold with DisplayPort

Wait what?! This would be jaw-dropping anticompetitive behavior. Could you source this statement?

Oh wow, that explains a lot, I sort of always figured it was just market momentum that meant you never see tv's with a display port. sort of like

... we need a digital video link

VESA develops DVI

... market gap for tv's identified

hdmif develops HDMI which is DVI with an audio channel

... while technically a minor feature that audio link was the killer feature for digital tv's and led to hdmi being the popular choice for tv's

VESA develops displayport a packet(vs streaming for DVI and hdmi) based digital link, it's packet nature allows for several interesting features including sending audio, and multiple screens.

... no tv's use it, while display port is better than hdmi it is not better enough to make a difference to the end user and so hdmi remains normal for tv's, you can find a few computer monitor with DP but you have to seek them out.

I will have to see if there is some sort of stupid "additional licensing cost" if a tv is produced with displayport, that would explain so much. I don't claim that there are no tv's with DP but I certainly have never seen one.