problem with it87.o
j.ellerbroek at student.tudelft.nl
Sat Aug 16 14:55:03 CEST 2003
The module is loaded at boottime (from /etc/modules), so i don't think sensors
-s causes the spinup. Also, after the module is loaded, the fan speed doesn't
go down anymore, even when i unload it87.o!
There are three temperature sensors on board, all of the thermistor type,
so i use temp_type=0x38. I've tried the default too, and i've tried reloading
the module with all the other possible flags. None made the speed go down.
the output of 'sensors' is as follows: (with temp_type=0x38)
Adapter: SMBus nForce2 adapter at 5100
Algorithm: Non-I2C SMBus adapter
VCore 1: +1.64 V (min = +1.53 V, max = +1.87 V)
VCore 2: +1.50 V (min = +2.25 V, max = +2.75 V) ALARM
+3.3V: +3.36 V (min = +1.48 V, max = +1.80 V) ALARM
+5V: +5.11 V (min = +4.50 V, max = +5.48 V)
+12V: +11.44 V (min = +11.36 V, max = +13.80 V) ALARM
-12V: -21.15 V (min = -15.86 V, max = -13.40 V) ALARM
-5V: -6.45 V (min = -10.13 V, max = -9.44 V) ALARM
Stdby: +5.11 V (min = +4.50 V, max = +5.48 V)
VBat: +3.21 V
fan1: 5192 RPM (min = 3000 RPM, div = 2)
fan3: 3648 RPM (min = 3000 RPM, div = 2)
Temp1/MB: +37°C (min = +20°C, max = +60°C)
Temp2/CPU: +40°C (min = +20°C, max = +60°C)
Temp3: +38°C (min = +20°C, max = +60°C)
For some reason sensors says the minimum fan speed is 3000, even though i
specified 1400 in /etc/sensors.conf
i hope this info helps,
On Saturday 16 August 2003 14:20, you wrote:
> > I've got a small bugreport for the it87 driver.
> > The driver loads fine, and i get normal readings afterwards, but as
> > soon as the driver loads, my cpu fan gears up to it's maximum rpm,
> > even though the temperature is still low enough.
> > I have a shuttle sn41g2 pc, with the nforce2 chipset. The board
> > supports variable fan speeds, it monitors cpu temperature, and sets
> > fan speed accordingly. Up to the point where i load the it87 module
> > that is :)
> > I'm running kernel 2.4.20, i2c and lm-sensors version 2.8.0
> > bios version fn41s019. Should you need more info just ask.
> Does the fan keep a high speed for always, or does is goes down after
> some times?
> Does the "sensors" program report any alarm? (a "cat" on the alarms file
> could help too)
> Can you confirm the fan speedup is caused by loading the driver, and not
> by running "sensors -s"? (Many scripts will do both in a row.)
> Does using the temp_type parameter with various values (read
> doc/chips/it87) have any influence (except giving very bad temperatures)
> on the fan speed?
More information about the lm-sensors