[Hendrikto]

> off-the-shelf 4K 120Hz monitor which refused to work at that resolution/refresh rate on an HDMI cable.

I run a 4K 144Hz monitor over HDMI. Are you sure you don‘t just need a better cable?

[matja]

My HDMI cables work at 4k 120Hz with the same monitor with an NVidia card using closed-source drivers, not with AMD open-source drivers, because of the issue in the article.