lm_sensors output

[Randy Kelsoe]

Jack Howarth wrote:

>However the sensors output shows two sections. One is for
>w83627hf-isa-0c00 and contains actual nonzero values for the
>temperatures and fan speeds. The second is for w83627hf-i2c-0-2d
>and contains only zeros for the temperature and fan speed.
>The first table is marked as Adapter: ISA adapter whereas the
>second with zero values is marked SMBus I801 adapter. What is
>the rational for which adapter gets the temperature measurements?
>Oh, this is for a dual Xeon box. Thanks in advance for any clues.
>                       Jack
>  
>

You access the sensor chip via either the SMBus or the ISA bus. I have 
never had any luck getting the sensors to read from the SMBus. I have 
always used the ISA bus. (Run sensors-detect again and read the output 
more closely for more details). You will most likely need to tweak your 
/etc/sensors.conf file for your sensor chipset to get more accurate 
values when you run the sensors command. What I do is go into the BIOS 
screen and check the values there and try and adjust my sensors to match 
what I see in the BIOS display. If you want to be really accurate, get a 
digital thermometer and voltmeter, and measure the values, then tweak 
your sensors.conf file to match.