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....
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.