On Thu, 16 Jun 2011 20:56:39 -0700, singumal wrote: > My sensors output is like this: > > f81865f-isa-0a00 > ... > System Temperature: +35.0°C (high = +85.0°C, hyst = +81.0°C) > (crit = +100.0°C, hyst = +96.0°C) sensor = transistor > > Is there any way to be able to get an ALARM if a sensor > transistor isn't installed? With no transistor it tends to show > low or negative temperatures. (Actually on a different > motherboard/sensor). I suspect the answer is "no, there's no > hardware limit for low temperature to cause an ALARM", just want > to confirm that I'd have to do this check myself. Some chips implement low temperature limits, some do not. Some chips implement fault reporting on missing/broken thermal sensor, some don't. The F81865F for example has the latter but not the former. So the behavior is completely chip-specific. Also note that not all low or negative temperature values hint at a broken or unused sensor. In general each chip has its own negative temperature value to indicate a missing measurement. -55, -127 and -128 are frequent values for this case, but some chips don't return a constant value, so you can't rely on it in the general case. -- Jean Delvare _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
