Comment 6 for bug 1724557

I believe I'm plagued by the same bug (also followed bug 1717170, and posted on bugzilla). However, now I don't get a full crash, but a session kick-out. This issue happens on two separate Intel NUC setups, both connected to a 4K TV with a displayport->hdmi2.0 -adapter (the other one from Club3D, the other a built in adapter in Intel Skull Canyon NUC.

But all in all, this is now forcing me to suspend my computers before switching off the displays, otherwise my entire desktop is lost. I can't understand how this is not more common, however.

An extremely annoying issue.