> Looks like the IT8721F in my machine just got supported, which is cool, > but the voltage values reported in hw.sensors are a bit odd: > > $ sysctl hw.sensors > hw.sensors.aibs0.temp0=32.00 degC (CPU Temperature), OK > hw.sensors.aibs0.temp1=36.00 degC (MB Temperature), OK > hw.sensors.aibs0.fan0=1480 RPM (CPU FAN Speed), OK > hw.sensors.aibs0.fan1=0 RPM (CHASSIS FAN Speed), WARNING > hw.sensors.aibs0.fan2=0 RPM (POWER FAN Speed), WARNING > hw.sensors.aibs0.volt0=1.39 VDC (Vcore Voltage), OK > hw.sensors.aibs0.volt1=3.33 VDC ( +3.3 Voltage), OK > hw.sensors.aibs0.volt2=4.93 VDC ( +5 Voltage), OK > hw.sensors.aibs0.volt3=12.13 VDC ( +12 Voltage), OK > hw.sensors.km0.temp0=19.00 degC > hw.sensors.it0.temp0=32.00 degC > hw.sensors.it0.temp1=36.00 degC > hw.sensors.it0.fan0=1483 RPM > hw.sensors.it0.fan1=0 RPM > hw.sensors.it0.fan2=0 RPM > hw.sensors.it0.volt0=3.89 VDC (VCORE_A) > hw.sensors.it0.volt1=3.76 VDC (VCORE_B) > hw.sensors.it0.volt2=1.86 VDC (+3.3V) > hw.sensors.it0.volt5=1.29 VDC (-12V) > hw.sensors.it0.volt8=2.29 VDC (VBAT)
Some vendors wire these chips up with the wrong resistors. Their BIOS knows what the offset or scaling is, but we don't.
