On my TW KDE system I use the System Monitor widget to view my system temps and fan speeds but something has changed and I had to reconfigure it from scratch. I also found not all of the options shown in the sensors command show up as configurable options on the widget. I did re-run sensors-detect but still no joy. The k10temp-pci does not show any more as a widget option. Anyone else seeing this? Any ideas please?
With the latest KDE System Monitor now defaults to a different program. It used to be set to ksysguard, but is now set to plasma-systemmonitor. Could this be the issue you are seeing? Ksysguard can still be run by name.