I don't know if the issue is with this widget, with Plasma 5, or what, but I have the coretemp kernel module loaded, and I can read the CPU temperature with sysctl from the terminal. So I know the correct kernel driver is loaded for the CPU temperature sensor at the OS level. But this widget reports no temperature sources for the CPU, hard drive, or anything else.
I don't know if the issue is with this widget, with Plasma 5, or what, but I have the coretemp kernel module loaded, and I can read the CPU temperature with sysctl from the terminal. So I know the correct kernel driver is loaded for the CPU temperature sensor at the OS level. But this widget reports no temperature sources for the CPU, hard drive, or anything else.