When using the coretemp driver with lm_sensors-2.10.2, the sensors command reports each core as having a single temp sensor and gives correct readings: # sensors coretemp-isa-0000 Adapter: ISA adapter temp1: +69 C (high = +100 C) coretemp-isa-0001 Adapter: ISA adapter temp1: +67 C (high = +100 C) However, ksensors lists the two coretemp instances, but does not show any available sensors. This has been brought up at http://bugs.kde.org/show_bug.cgi?id=138593 and the problem stems from ksensors not validating temperature sensors without configurable min and max values. The patch available at the above URL corrects the problem in my case on a T2500 core duo laptop. NOTE: I did not create the patch. It comes from Ben Voigt. It appears to me that the patch has not been passed on to the developers of ksensors.
Upstream abandoned this package, multiple issus, patches available. Two options: Someone volunteers or we punt it.
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http://bugs.gentoo.org/show_bug.cgi?id=171208 has an ebuild which uses the Debian patches from mirror://debian. The Debian ksensors maintainer is also one of the upstream maintainers.
This has been fixed by using the Debian patchset from bug 171208. I've just committed ksensors-0.7.3-r1 to CVS.