Freesync VRR

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  • December 24, 2024 at 4:43 PM #64486
    SK123
    Participant

      <p style=”text-align: left;”>Hi, I am connecting my Mister to OSSC pro using direct video via HDMI. I am using a LG C4 OLED TV. How can I get the OSSC pro to output VRR?</p>
       

      When I had the Mister connected directly to my TV via HDMI (not direct video) it worked great. My TV would recognize and switch to VRR freesync. BTW, I have Mister.ini set to low lag and VRR freesync. It’s just when I output to OSSC pro my TV doesn’t recognize the VRR.

      December 24, 2024 at 4:56 PM #64487
      BuckoA51
      Keymaster

        You’ve enabled VRR on the OSSC Pro too?

        December 25, 2024 at 12:06 AM #64490
        SK123
        Participant

          Yes. I enabled the VRR flag. Is there anything else I need to enable?

           

          I am using line multiplier both adaptive and pure.

          December 25, 2024 at 8:46 AM #64497
          marqs
          Participant

            Do you have same result if you set vrr_mode=2 and vrr_max_framerate=144 in mister.ini? Pro currently only sets Freesync output flags, and does not support VESA VRR. It doesn’t either read display’s EDID and sets relevant metadata blindly.

            December 25, 2024 at 1:41 PM #64501
            SK123
            Participant

              Unfortunately yes. Even after changing the VRR max frame rate in the mister.ini it my TV still doesn’t doesn’t switch to VRR.

              December 27, 2024 at 8:37 AM #64519
              marqs
              Participant

                So apparently the TV does not support Freesync, only VESA VRR. At some point support for VESA VRR may be added on OSSC as well, but keep in mind that VRR in this context is only a workaround for TV issues and does not improve anything if TV handles non-VRR signal properly.

                December 27, 2024 at 11:27 PM #64529
                SK123
                Participant

                  <p style=”text-align: left;”>Hi marqs. Do you mean my television? It’s a LG C4 OLED. I attached a picture of the settings.</p>
                   

                  It has VRR and both g-sync and amd freesync. The VRR works when I connect directly from the Mister FPGA to the television.LG C4 vrr

                  December 28, 2024 at 11:09 AM #64531
                  marqs
                  Participant

                    The VRR works when I connect directly from the Mister FPGA to the television.

                    Didn’t you just say that Mister with vrr_mode=2 (freesync) did not switch TV into VRR mode?

                    December 28, 2024 at 12:47 PM #64534
                    SK123
                    Participant

                      Correct but that’s only when the Mister is connected to the OSSC pro then to the television.

                      December 30, 2024 at 2:55 PM #64544
                      marqs
                      Participant

                        It seems there is an issue in infoframe checksum calculation. This will be fixed in next fw.

                        December 30, 2024 at 3:29 PM #64545
                        SK123
                        Participant

                          Ok great. Thank you!

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