After the mid October Nvidia driver / inxi update, Plasma System Monitor would crash here, if you selected any other page apart from Overview.
I was getting
zsh: segmentation fault (core dumped) plasma-systemmonitor
when I launched from terminal.
After 6-8 reboots over a few days it went back to normal. So it fixed itself.
I had reinstalled plasma-systemmonitor at first, but it would not fix it in the beginning.
Reason for this issue could have been:
I installed the inxi update inside a running sesion from the Pamac gui (gtk=gtk4).
(There weren’t any conszumizations, all was left @ default)