HDMI 2.1 Display Stream Compression (DSC) Ready for Amdgpu Linux Driver (opens in new tab)

(phoronix.com)

66 pointsWithinReason1mo ago49 comments

49 comments

20 comments · 3 top-level

NooneAtAll31mo ago· 7 in thread

Every time I hear about HDMI and amount of legalese problems around it, my response is "you can just use DisplayPort"

tapoxi1mo ago

Most TVs don't have DisplayPort

preisschild1mo ago

In my case its an issue because I have a monitor with only a single DP port and I need to switch between my tower and laptop. I have to use HDMI for the laptop to monitor connection.

1 more reply

cassianoleal1mo ago

An adaptor costs £7.

5 more replies

saghm1mo ago

Can DisplayPort be used for audio? My recollection is that the main advantage of HDMI is transmitting both video and audio.

throw0101a1mo ago

See "Audio specifications" at bottom of table:

* https://en.wikipedia.org/wiki/DisplayPort#Specifications

* https://www.cablematters.com/Blog/DisplayPort/does-displaypo...

expedition321mo ago

You can just use Nvidia.

NooneAtAll31mo ago

no, Nvidia is the HDMI of gpus

WithinReasonOP1mo ago· 6 in thread

This was previously blocked from inclusion in SteamOS by the HDMI forum. It would help the Steam Machine to each 4K120Hz on HDMI.

paol1mo ago

It was blocked from inclusion in the AMD GPU drivers, it's nothing specific to Steam or the Steam Machine.

The HDMI Forum apparently forbids any open source implementation of HDMI 2.1. Although I don't know if they ever offered an official justification, for a group that exists to promote HDMI adoption, they're clearly morons.

account421mo ago

It's a group that exists to make sure that the standard works for all the members, including media companies that think they can control the flow of information. They don't need to promote HDMI adoption since their members already control pretty much all the TV production.

1 more reply

Aissen1mo ago

were*

As the article says, they most likely changed their mind, probably following quite a bit of background discussions and industry influence.

mort961mo ago

Wait "forbids", present tense? How does that track with this announcement that it's coming to the open source AMDGPU?

1 more reply

expedition321mo ago

If memory serves HDMI includes DRM which they don't want people to reverse engineer.

preisschild1mo ago

Valve also contributes to the amdgpu driver

tosti1mo ago· 4 in thread

> 4K @ 240Hz

WHY!?

preisschild1mo ago

I have a Samsung G95NC (DP2.1, 7680x2160, 240Hz) and you definitely notice the difference between 120Hz and 240Hz. Although personally I wouldn't pay a cent more for an even higher refresh rate since the difference is much less noticable than 60vs120Hz and I expect 240Hz vs 420 to make even less of a difference.

cassianoleal1mo ago

Would you rather they explicitly blocked that even though the technology allows for it?

nottorp1mo ago

It's too easy for display manufacturers to compete on moar pixels, moar fps, moar refresh. You just try to embiggen your numbers compared to your competitor.

Meanwhile, features where you can't compete on numbers but can ruin the experience are ignored.

1 more reply

tosti1mo ago

No, I just don't think such a high refresh rate accomplishes anything. Not even bragging rights. 120Hz, possibly. But 240? Are you going to introduce a telly into a slow-motion studio, on the set?

2 more replies

j / k navigate · click thread line to collapse

49 comments

20 comments · 3 top-level

NooneAtAll31mo ago· 7 in thread

Every time I hear about HDMI and amount of legalese problems around it, my response is "you can just use DisplayPort"

tapoxi1mo ago

Most TVs don't have DisplayPort

preisschild1mo ago

In my case its an issue because I have a monitor with only a single DP port and I need to switch between my tower and laptop. I have to use HDMI for the laptop to monitor connection.

1 more reply

cassianoleal1mo ago

An adaptor costs £7.

5 more replies

saghm1mo ago

Can DisplayPort be used for audio? My recollection is that the main advantage of HDMI is transmitting both video and audio.

throw0101a1mo ago

See "Audio specifications" at bottom of table:

* https://en.wikipedia.org/wiki/DisplayPort#Specifications

* https://www.cablematters.com/Blog/DisplayPort/does-displaypo...

expedition321mo ago

You can just use Nvidia.

NooneAtAll31mo ago

no, Nvidia is the HDMI of gpus

WithinReasonOP1mo ago· 6 in thread

This was previously blocked from inclusion in SteamOS by the HDMI forum. It would help the Steam Machine to each 4K120Hz on HDMI.

paol1mo ago

It was blocked from inclusion in the AMD GPU drivers, it's nothing specific to Steam or the Steam Machine.

account421mo ago

1 more reply

Aissen1mo ago

were*

As the article says, they most likely changed their mind, probably following quite a bit of background discussions and industry influence.

mort961mo ago

Wait "forbids", present tense? How does that track with this announcement that it's coming to the open source AMDGPU?

1 more reply

expedition321mo ago

If memory serves HDMI includes DRM which they don't want people to reverse engineer.

preisschild1mo ago

Valve also contributes to the amdgpu driver

tosti1mo ago· 4 in thread

> 4K @ 240Hz

WHY!?

preisschild1mo ago

cassianoleal1mo ago

Would you rather they explicitly blocked that even though the technology allows for it?

nottorp1mo ago

It's too easy for display manufacturers to compete on moar pixels, moar fps, moar refresh. You just try to embiggen your numbers compared to your competitor.

Meanwhile, features where you can't compete on numbers but can ruin the experience are ignored.

1 more reply

tosti1mo ago

No, I just don't think such a high refresh rate accomplishes anything. Not even bragging rights. 120Hz, possibly. But 240? Are you going to introduce a telly into a slow-motion studio, on the set?

2 more replies

j / k navigate · click thread line to collapse