Then it would be best to check the version of your distro and session, then go to their github issue list and search for it, if there isn’t one provide a issue for them to look at. I also recommend verifying if it’s not a hardware issue or cable fault.
Comment on Valve: HDMI Forum Continues to Block HDMI 2.1 for Linux
Endymion_Mallorn@kbin.melroy.org 4 weeks agoWhatever Cinnamon runs on natively. I have no idea beyond that.
T4V0@lemmy.pt 4 weeks ago
Anafabula@discuss.tchncs.de 4 weeks ago
Last I heard Cinnamon does not have stable Wayland support yet. One of the reasons Wayland was made is because multi-screen support on the old X11 is an ugly hack. Unlike wayland, it doesn’t play well with screens of different resolutions, refresh rates or adaptive sync compatibility.
Endymion_Mallorn@kbin.melroy.org 4 weeks ago
Oh, then it's probably that issue.