SUMMARY
It's about KDE Plasma with WAYLAND
Again new problem with kde 5.26.4... I don't know what you did on that new versions but everything is f*ed up... when I had Fedora 36 with KDE 5.24.x there wasn't any problems at all! 

When I have (or not) connected second screen before first hibernation, after resume second screen is black (without signal), then I try to reconnect it and then screen freezes (main screen, second is still without signal), but it's only screen... when I have for example audio playing it's still playing, so that's not STOPPED system or something... anyway then I have to power off notebook with button.
When I have connected second screen before hibernation, then after resume it's black but main screen is working... and when I DISCONNECT second screen it's also freezing.
So it's freezing with both options connect and disconnect, but only after resume hibernation.

BUT it's only on NOVEAU DRIVERS, when I had nvidia official drivers it was working good (except there was 60hz refresh (should be 240) on second screen)

I don't know why so much problems with SECOND SCREEN on that new versions of KDE PLASMA... I have also problem while second screen connected before login to KDE on X11.... https://bugs.kde.org/show_bug.cgi?id=462725

STEPS TO REPRODUCE
1. Hibernate computer
2. After resume try to connect/disconnect (because it's black if it was connected before hibernation)
3. Main screen freezes, second is still black, have to power off button.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 37
(available in About System)
KDE Plasma Version: 5.26.4
KDE Frameworks Version:  5.101.0
Qt Version: 5.15.7

ADDITIONAL INFORMATION
Kernel: 6.0.12