this post was submitted on 26 Mar 2026
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Oh, you want to plug your own computer into your own TV using a cable you own?
Isn’t there someone you forgot to ask (and pay)?
The mighty DisplayPort: "what is this peasant behaviour I'm too royal(ty-free) to understand?"
How do I add a DP port to both my TV and my laptop?
If your laptop has USB-C it most likely already has DP out.
Your TV? message the manufacturer. tell your friends to message the manufacturer. Demand DisplayPort on TVs. Be the change you want to see in the world.
For some reason I always miss this. I checked in software and at least arandr says I have 4 DP Outs. Presumably 2 per USB-C port? I don't know how this actually works.
I think past thunderbolt 4 you get 2 displays daisy chained off of one port. I have a thunderbolt 5 port and I run 2 4k monitors off of it
Thanks! I'm gonna try and find a USB-to-DP cat'o'tails I can buy for cheap to see what happens.
Attach a DP to component video adapter to the TV.
While DP ports can output HDMI signal, HDMI ports can't receive DP signal.
Meaning you would buy an adapter that is active, which means it needs to pay HDMI royalties.
Basically, you'd be paying double to the HDMI Forum, to get around their shittiness.
That's kinda... Counterproductive. Don't you think?
That's why I said to use a component video adapter. It's an analog signal that has nothing to do with HDMI.
Oh shoot. Somehow I read that as a video adapter component 🤦♂️
Explain?
The HDMI consortium are shitheads who demand royalties, and all Linux PCs are gimped to not have modern HDMI features because of it.
It's the year of the linux desktop!
(Unless you enjoy high fidelity gaming)
IDK I've got two 1440p monitors connected via DP. I can't say I've encountered any fidelity issues.
This play port is superior and is what is used on most high-end GPUs.
bone apple tea
xD now I can't fix it
Yeah, but unfortunately most TVs don't support DisplayPort. Although that reminds me someone made patches to the Linux kernel to enable 4k@120 Hz through HDMI without color degradation on AMD GPUs. I haven't heard much about them since they were brought up in media, but if I recall correctly CachyOS included them in their kernel.
Are there many people that care about "high fidelity gaming" and HDMI features Linux can't support - AND trying to play on a standard TV?
Are you implying that gaming on a 120 Hz 4k OLED TV is somehow bad?
A big reason why Linux is popping off as much as it is lately, is because of HTPCs, so yes
But they're fine for that
Are you sitting 1 foot from the 56' screen? No? Then display port is more than fine.
Did you mean HDMI?
No, but I did respond to the wrong comment. Whoops
https://arstechnica.com/gadgets/2024/02/hdmi-forum-to-amd-no-you-cant-make-an-open-source-hdmi-2-1-driver/
I have a TV with every input including VGA. It is for gaming only at this point.
American tipping culture. Just do your job for a proper wage instead.