TL;DR: Did a large Manjaro system update this morning and now any time I rotate the orientation of an external monitor it freezes the entire system.
OS: Manjaro Linux x86_64 Kernel: 5.15.46-1-MANJARO DE: Plasma 5.24.5 ❯ loginctl show-session 2 -p Type Type=x11
Error: System becomes unresponsive, cannot move to another console (Ctrl+Alt+F2…F12) cannot open terminal, no user keyboard or mouse response, desktop draws displays overlapping, incorrectly, or blanks out completely to black.
Steps to reproduce error: Open KDE System Settings, navigate to Display and Monitor > Display Configuration, select desired monitor to then use the orientation buttons to select the desired rotation. I also moved the display in the re-arrange screens view to center it (never understood why that doesn’t happen by default).
Solution: The orientation and re-arranging need to be applied separately, then it works. I’ve tested and confirmed this. When in doubt, don’t make too many changes at the same time.