The problem computer is a Gateway NV79 laptop, with an Intel i3 CPU. lshw: Intel(R) Core(TM) i3 CPU M 330 @ 2.13GHz 4 cores. Specifically, I'm happily using the "System Load" plasmoid on Debian 11 on another i3 (Intel(R) Core(TM) i3-4130 CPU @ 3.40GHz) and just installed the "Individual Core Usage" plasmoid, which also works fine. But neither work on the NV79 after upgrading from Debian 11 to Debian 12. It seems they can't find the proper sensors. On the working i3, "Individual Core Usage" -> "Sensor Details" show CPU 1 CPU2 CPU3 CPU 4. On the non-working one, no amount of clicking on the "Sensors" field produce anything. On the non-working NV79, neither plasmoid produce any output. Debian 11, per aptitude (kde-full) reports 5:111 Debian 12, per aptitude (kde-full) reports 5:142 Another data point: On a Mac Pro, Debian 12 (kde-full 5:142) with 2 Intel(R) Xeon(R) CPUs E5320 @ 1.86GHz, 4 cores each: "Individual Core Usage" -> "Sensor Details" shows all 8 cores. "Individual Core Usage" works fine "System Load" produces no output. Any idea what the problem could be? I'm reluctant to upgrade my main system if things like this are going to break. Can I provide some spefic data that might help pinpoint the problem? Thanks. Augustine