New Box: Temperature/Fan Issues?

  • Just installed 2.3.1 on a Core i3 4130 Lenovo RS140. When I first installed, the fans ran at full speed. I reconnected the thermal sensor lead, and the fans calmed down.

    I intentionally let the house get down to 65 degrees, let the box cool down to room temp, and rebooted. Fans stayed calm, but I noted that PFSense GUI reported a temp of 27.8. I didn't think much of it.

    I placed the box back into the cabinet. I kept checking the temp via the GUI every couple of hours and it's constantly 27.8C. I have never seen it anything but 27.8C.

    sysctl -a | grep -Ei "[0-9]+.[0-9]+C" gives me

    hw.acpi.thermal.tz1._CRT: 105.0C
    hw.acpi.thermal.tz1._PSV: 108.0C
    hw.acpi.thermal.tz1.temperature: 29.8C
    hw.acpi.thermal.tz0._ACx: 80.0C 55.0C 0.0C 0.0C 0.0C -1 -1 -1 -1 -1
    hw.acpi.thermal.tz0._CRT: 105.0C
    hw.acpi.thermal.tz0.temperature: 27.8C

    I am having a hard time determining which temperature is which….. This is with the Box at what will be normal operating temp (virtually no load) inside a not-so-well ventilated cabinet. The ambient temp outside the cabinet is about 72-74F (22C).

    I am never seen tz0 before with any of my FreeBSD boxes....

  • Rebel Alliance Developer Netgate

    The CRT and PSV values are thresholds at which the system will use passive or critical cooling (e.g. throttling the fan down/off or higher). The .temperature OIDs are the sensor values. If they are not correct, blame the BIOS/ACPI :-)

    Since you have tz 0 and 1, that means there are two thermal sensors on there, but you'd have to check the board specs or BIOS to see which is which. I imagine one is the CPU and the other is a sensor elsewhere on the board. It is suspicious that they never appear to change temperature.

    Depending on your CPU type/board, the amdtemp or coretemp kernel module might get better info.

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