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AMD Posts Linux Patches In Preparing For DisplayPort 2.0 Radeon GPU Support

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  • AMD Posts Linux Patches In Preparing For DisplayPort 2.0 Radeon GPU Support

    Phoronix: AMD Posts Linux Patches In Preparing For DisplayPort 2.0 Radeon GPU Support

    The latest feature display work to happen for the AMDGPU kernel driver since the debut of FreeSync HDMI in Linux 5.13 is around DisplayPort 2.0 support and specifically the SST UHBR10 handling...

    https://www.phoronix.com/scan.php?pa...-DP-SST-UHBR10

  • #2
    And good luck finding a lot of watchable material at 4K @ 144Hz, unless it's all about games.

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    • #3
      Originally posted by phoronix View Post
      ...allow 40 Gbps of bandwidth over passive cooper cabling...
      typo or brand name?

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      • #4
        Originally posted by cl333r View Post
        And good luck finding a lot of watchable material at 4K @ 144Hz, unless it's all about games.
        5k Ultrawides (5120x2160) with 10 or 12bit color are a thing sooner or later + 60fps.

        That´s 5120×2160×30×60 of Bits/second required ( 19906560000 ) that´s 18,5GBit/sec

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        • #5
          Originally posted by cl333r View Post
          And good luck finding a lot of watchable material at 4K @ 144Hz, unless it's all about games.
          Got to have the hardware to support such content before you can even create that content. Inexpensive hardware because it's not just the studios and professional content creators that need it. You also need to solve the Last Mile Problem in countries that have it (including the US), and get such client hardware in the hands of the average content consumer. Sure, it's about games, but it's also about VR/AR & video. Video might not make it... there's the problem of high resolution/high refresh video being too real which apparently tends to disorient.

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          • #6
            Originally posted by Spacefish View Post

            5k Ultrawides (5120x2160) with 10 or 12bit color are a thing sooner or later + 60fps.

            That´s 5120×2160×30×60 of Bits/second required ( 19906560000 ) that´s 18,5GBit/sec
            There are monitors like the Samsung Odyssey (Neo) G9, which rely on DSC (Display Stream Compression) to achieve 10-bit [email protected] The Neo version has HDMI 2.1, which has more bandwidth than DisplayPort 1.4 -- so it does 144Hz uncompressed with that whereas you can only do 120Hz uncompressed with DisplayPort.

            There are reports of some weird flickering issues with some very specific images/videos when running at 240Hz. People talk about it possibly being a firmware issue, but I think they might just be pathological inputs for DSC.

            What I'm really looking forward to is USB4, because then we'll have docks that can handle DisplayPort 2.0, usb, ethernet, and more power delivery -- all of which would be great with KVM capabilities of a monitor or separate.

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            • #7
              Originally posted by cl333r View Post
              And good luck finding a lot of watchable material at 4K @ 144Hz, unless it's all about games.
              Obviously, there's barely any [email protected] movies... This is about driving high resolution computer screens at higher refresh rates.

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              • #8
                Hopefully it works better than HDMI on Polaris

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                • #9
                  I'm waiting for UHBR 13.5 and UHBR 20 plus MST modes to get new hardware. I don't like this current lagging, plus G-Sync vs FreeSync wars.

                  HDMI? That anti-Linux interface? No, thanks.

                  When will newer modes be supported in Linux? What about latest HDMI and their draconian licensing?

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                  • #10
                    Half OT: Does HDMI Freesync alsp work with an AMD Ryzen 2500U APU processor (integrated GPU)

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