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?
Here you go: https://www.amazon.com/Cable-Matters-102101-BLK-Computer-Adapter/dp/B08XFSLWQF
It’s slightly quirky, but it does work. Although I don’t use HDMI audio so maybe you’re already using the same adapter.
It’s not the adapter I bought, but also seems VRR is lacking:
“VRR/G-Sync/FreeSync are not supported.”
Have you experienced otherwise?