BrakeBlog

Moving right along, I installed lm_sensors and put the effort in to correct the readings I was getting. I wrote down the readings from my BIOS and matched up those with identical readings from lm_sensors. Then I stole the equations from the it8716 section of sensors.conf. In the end, I only have one sensor which is unlabeled. It is probably -5v but the equation from it8716 doesn’t figure to be close to -5v so it must be disconnected.

Contents of /etc/sensors.conf

chip “it8718-isa-*”

label in0 “DDR2″
label in1 “-12v”
label in2 “+3.3v”
label in3 “+12v”
label in4 “+5 VSB”
label in5 “Chipset”
label in6 “CPU”
label in8 “MB Batt”
label fan1 “CPU Fan”
label temp1 “Case Temp”
label temp2 “CPU Temp”
label vid “CPU volt”

compute in1  (1+232/56)*@ – 4.096*232/56 , (@ + 4.096*232/56)/(1+232/56)
compute in3 ((30/10)+1)*@ , @/((30/10)+1)
compute in4 ((6.8/10)+1)*@ , @/((6.8/10)+1)

set in0_min 1.8 * 0.95
set in0_max 1.8 * 1.05
set in1_max  -12 * 0.95
set in1_min  -12 * 1.05
set in2_min 3.3 * 0.95
set in2_max 3.3 * 1.05
set in3_min 12 * 0.95
set in3_max 12 * 1.05
set in4_min 5 * 0.95
set in4_max 5 * 1.05
set in5_min 1.5 * 0.95
set in5_max 1.5 * 1.05
set in6_min 1.2 * 0.95
set in6_max 1.2 * 1.05
set temp1_low 40
set temp1_over 70
set temp2_low 40
set temp2_over 70
set fan1_min 1400

ignore fan2
ignore fan3
ignore temp3
ignore in7

Output of “sensors”

ebrake@scanner ~ $ sensors
it8718-isa-0290
Adapter: ISA adapter
DDR2:      +1.82 V  (min =  +1.71 V, max =  +1.89 V)
-12v:     -12.03 V  (min = -12.61 V, max = -11.37 V)
+3.3v:     +3.28 V  (min =  +3.14 V, max =  +3.47 V)
+12v:     +11.84 V  (min = +11.39 V, max = +12.61 V)
+5 VSB:    +5.16 V  (min =  +4.76 V, max =  +5.24 V)
Chipset:   +1.52 V  (min =  +1.42 V, max =  +1.57 V)
CPU:       +1.25 V  (min =  +1.14 V, max =  +1.26 V)
MB Batt:   +3.26 V
CPU Fan:  1638 RPM  (min = 1400 RPM)
Case Temp:   +57 C  (low  =   +40 C, high =   +70 C)   sensor = thermistor
CPU Temp:    +52 C  (low  =   +40 C, high =   +70 C)   sensor = diode
CPU volt: +2.050 V

Just for fun here is the SMBus version from lspci

00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)