On Sun 27 Jun 2004 03:29:00 PM CDT Jean Delvare <khali at linux-fr.org> said:
> 1* Make sure that temperatures increase with CPU load, and not the other
> way around. There are two kind of thermistors, positive coeff and
> negative coeff. The driver assumes negative, since that's what most
> people use. But if Soekris did a different choice, you'll have to change
> the "compute" lines in sensors.conf. Likewise, if Beta value isn't 3435,
> you'll need to update the "compute" line for proper readings.
Upon further examination, I'm now noticing a problem -- wild temperature swings.
soekris1# sensors
pc87366-isa-6620
Adapter: ISA adapter
in0: +2.95 V (min = +0.00 V, max = 2.95 V)
in1: +2.24 V (min = +1.18 V, max = 1.45 V) ALARM
in2: +2.79 V (min = +0.00 V, max = 2.95 V)
in3: +0.77 V (min = +0.00 V, max = 2.95 V)
in4: +2.76 V (min = +0.00 V, max = 2.95 V)
in5: +2.78 V (min = +1.27 V, max = 1.55 V) ALARM
in6: +0.00 V (min = +1.18 V, max = 1.45 V) ALARM
Vsb: +3.66 V (min = +2.99 V, max = 3.59 V) ALARM
Vdd: +3.66 V (min = +2.99 V, max = 3.59 V) ALARM
Vbat: +2.95 V (min = +2.40 V, max = 2.95 V)
AVdd: +3.64 V (min = +2.99 V, max = 3.59 V) ALARM
temp4: +28 C (low = -0 C, high = +85 C)
temp4_crit:
-9 C
temp5: +31 C (low = -0 C, high = +85 C)
temp5_crit:
-9 C
soekris1# sensors
pc87366-isa-6620
Adapter: ISA adapter
in0: +2.95 V (min = +0.00 V, max = 2.95 V)
in1: +2.24 V (min = +1.18 V, max = 1.45 V) ALARM
in2: +2.78 V (min = +0.00 V, max = 2.95 V)
in3: +0.77 V (min = +0.00 V, max = 2.95 V)
in4: +2.76 V (min = +0.00 V, max = 2.95 V)
in5: +2.77 V (min = +1.27 V, max = 1.55 V) ALARM
in6: +0.00 V (min = +1.18 V, max = 1.45 V) ALARM
Vsb: +3.66 V (min = +2.99 V, max = 3.59 V) ALARM
Vdd: +3.66 V (min = +2.99 V, max = 3.59 V) ALARM
Vbat: +2.95 V (min = +2.40 V, max = 2.95 V)
AVdd: +3.64 V (min = +2.99 V, max = 3.59 V) ALARM
temp4: +39 C (low = -0 C, high = +85 C)
temp4_crit:
-9 C
temp5: +41 C (low = -0 C, high = +85 C)
temp5_crit:
-9 C
This may sound strange, but it seems like the more I run sensors, the higher the
temperature goes. If I let it "rest" for a while by not running sensors, the
readings seem to return to 20-25C. They *seem* to stay there as long as I don't
run sensors too often. Running sensors two or more times in quick succession
will almost always yield the swings.
> 2* I still wonder why temp3 reads 80 degrees. On the one hand, it looks
> damn hot and hardly credible. On the other hand, temp3 is an internal
> sensor, so it cannot possibly be wrong. If you get a contact at Soekris,
> this is a question you may ask to them.
Ok, will do.
> 4* If you confirm that on cold reboot, thermistors (temp4 and temp5) are
> disabled on your Soekris board, we will need to give you a way to
> forcibly enable them (instead of temp1 and temp2 by default). Of course
> you can do it with isaset but that's not particularly convenient. I plan
> to do that through the init parameter (something like "add 4 to init to
> prefer thermistors over thermal diodes regardless of how the chip is
> configured"). Just tell me if you actually need it.
Ok, i'll do a cold reboot sometime tomorrow.
Thanks,
--
Andrew D. Johnson
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