Hello,
As you might know, AMD gpus don’t support HDMI 2.1, so some users are resorting to using DP to HDMI PCON adapters such as this one.
Unfortunately, on some displays, it still doesn’t fully work because of malformed display EDIDs.
I spent a long time debugging and trying different EDIDs (many many that should’ve worked) until I got one that gave me 4K 144Hz + HDR + VRR with my S90D TV. Without this, I am limited to 4k 120Hz + HDR (no VRR). I wanted to share it so that other people don’t spend as much time to get it working. It should even work with HDMI.
Link:
Even if you don’t have a S90D and are having issues with freesync or 4k 144Hz, feel free to try it out.
Guide to override your EDID in linux:
https://wiki.archlinux.org/title/Kernel_mode_setting#Forcing_modes_and_EDID
Thanks.