I recently made a post about my FreeSync certified monitor not supporting VRR over HDMI. I thought that there was VRR support over HDMI even for versions below 2.1 spec. Am I mistaken in my assumption¿? Has the HDMI forum prevented the implementation of FreeSync in the open source drivers¿?
Obligatory fuck the HDMI forum and the HDMI spec.
Apparently so it does, and it says “HDMI Freesync” rather than “HDMI [2.1] VRR”. FreeSync HDMI is a completely different protocol and is supposed to work under Linux. Found a thread here, can you try
cat /sys/kernel/debug/dri/0/HDMI-A-1/vrr_range
andedid-decode < /sys/class/drm/card0-HDMI-A-1/edid
? Though there is no solution there.