So, I bought an RX 7600 XT, when I was still using my 10 year old TV. Recently upgraded to an LG C4, reading the news about AMD support for HDMI 2.1 on Linux, I also went looking for a DP->HDMI adapter and found one that claims to even support VRR. After a week of getting random audio cuts, suspecting the adapter was at fault, I went pure HDMI…

To my surprise, I could run at 4K 120hz with VRR and HDR. Doesn’t that require HDMI 2.1?

  • Sproutling@lemmy.mlEnglish
    1·
    10 days ago

    You’re probably running in non-RGB 4:4:4. Quick test is to have some red console text against a gray background and if the text is fuzzy with compression artifacts at the edges, then it is not 4:4:4. You can check what mode your TV is in by clicking the green button with the two dots seven times.

      • Sproutling@lemmy.mlEnglish
        0·
        10 days ago

        Nope, you’re running into the dreaded AMD HDMI 2.1 limitation. The situation just sucks.

        • take6056@feddit.nlOPEnglish
          0·
          10 days ago

          I would kindly ask the HDMI forum to point me in the direction of a DP to HDMI adapter that supports VRR or FreeSync. They seem so motivated to gain more funds from royalties, surely they know how to persuade me.