On 09/08/2013 02:47 PM, Tomas Larsson wrote:
-----Original Message-----
From: Guenter Roeck [mailto:linux@xxxxxxxxxxxx]
Sent: Sunday, September 08, 2013 11:41 PM
To: Tomas Larsson; LM Sensors
Subject: Re: Whats wrong with LM-Sensors
On 09/08/2013 02:27 PM, Tomas Larsson wrote:
-----Original Message-----
From: Guenter Roeck [mailto:linux@xxxxxxxxxxxx]
Sent: Sunday, September 08, 2013 11:20 PM
To: Tomas Larsson
Cc: 'Jean Delvare'; lm-sensors@xxxxxxxxxxxxxx
Subject: Re: Whats wrong with LM-Sensors
On 09/08/2013 01:01 PM, Tomas Larsson wrote:
-----Original Message-----
From: Jean Delvare [mailto:khali@xxxxxxxxxxxx]
Sent: Sunday, September 08, 2013 9:10 PM
To: Guenter Roeck
Cc: Tomas Larsson; lm-sensors@xxxxxxxxxxxxxx
Subject: Re: Whats wrong with LM-Sensors
On Sun, 08 Sep 2013 11:58:39 -0700, Guenter Roeck wrote:
Different driver. Centos 6.4 uses the coretemp driver which gets
the temperature from the CPU directly. Unfortunately, Centos 6.4
is quite old when it comes to kernel version, and so is its
coretemp
driver.
The displayed temperatures in your version are all wrong; the
maximum
temperature for Atom 330 is 125 degrees C, not 90 degrees C.
You'll have to add 35 degrees C to the displayed temperature.
You could either update the coretemp driver to a later version to
fix this, or add the offset to /etc/sensors3.conf.
Note that CPU temperatures are notoriously unreliable.
"Inaccurate in the low temperature range" is a better way to
describe the situation IMHO. The coretemp values are reliably
telling the user when the temperature gets too close to the high
limit.
--
Jean Delvare
Well, I'm aware of that, what I want to know is when the fan fails,
these 40mm fans are not that reliable, unfortunately.
Not sure if you can use the cpu temperature to predict if the fans
are
working
or not. The CPU can get pretty hot under load, even with the fans
working.
Your initial e-mail showed the fan speeds as 0. Are they broken or
turned
off
or not connected to the fan speed sensors ?
Guenter
Haven't got a clue why it says that they are 0, they definitely work
now (changed the fans today), They are 3-pins and connected to the
correct header.
Do you get a non-zero speed reported after replacing the fans ? If the
reported speed is still 0, I am not sure I understand what is going on.
Guenter
Yes.
Haven't checked what BIOS reports though, if it reports any fan-speeds.
Number of possibilities. Looks like the chip doesn't monitor fan speeds if pwm is 0.
So you should check for that. File should be /sys/class/hwmon/hwmonX/pwmY,
where X is either 0 or 1 and Y is 1 and 2.
Second, it may be that the fan divisor value (same directory) is too low or too high.
Try setting it to different values. 1, 2. 4, and 8 are permitted.
Third, it may be that the preload value is off. It is controlled with the "fanX_min"
attribute. Try setting a lower minimum speed (eg 500). If that doesn't work,
set the minimum speed to something really high.
In other words, play with the _div and _min attributes to see if you can get
a speed output.
But of course checking the BIOS would be a really good idea.
Guenter
_______________________________________________
lm-sensors mailing list
lm-sensors@xxxxxxxxxxxxxx
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
