Re: f71889ed temp alarm polarity reversed.

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On Sun, 24 Apr 2011 16:57:12 +0200, Hans de Goede wrote:
> Hi,
> 
> On 04/24/2011 12:39 AM, James Cloos wrote:
> > As of Linus' v2.6.39-rc4-89-g2f666bc I still get:
> >
> > fan1:         871 RPM
> > fan2:           0 RPM  ALARM
> > fan3:           0 RPM  ALARM
> > temp1:        +35.0°C  (high = +255.0°C, hyst = +251.0°C)  ALARM (CRIT)
> >                         (crit = +255.0°C, hyst = +251.0°C)  sensor = transistor
> > temp2:          FAULT  (high = +255.0°C, hyst = +251.0°C)
> >                         (crit = +255.0°C, hyst = +251.0°C)  sensor = transistor
> > temp3:        +38.0°C  (high = +255.0°C, hyst = +253.0°C)  ALARM (CRIT)
> >                         (crit = +255.0°C, hyst = +253.0°C)  sensor = transistor
> >
> > The polarity for the fan alarms is correct, but it is reversed for the
> > temp alarms.
> 
> I just checked the data sheet and it disagrees with your observation. It is
> possible that the temp has been outside alarm boundaries before they
> were set to their current settings, and the alarm register has never
> been read before. Try running the sensors command again (after waiting
> a couple of seconds otherwise you will get cached readings).

Note that only the critical limit alarms appear to be set.

> Or maybe the problem is that 255 gets seen as -1 ? The F71889ED does
> have signed values in certain temp registers (but not the alarm thresholds
> according to the datasheet). Try writing 100 to the temp#_max and
> temp#_crit sysfs attributes, you can find these files under
> /sys/class/hwmon#, or /sys/class/hwmon#/device.

Actually value 100000 and directory /sys/class/hwmon/hwmon#,
or /sys/class/hwmon/hwmon#/device. But it may be easier to add:

chip "f71889ed-*"

   set temp1_max   90
   set temp1_crit 100
   set temp3_max   90
   set temp3_crit 100

to /etc/sensors.d/f71889ed.conf and run "sensors -s".

-- 
Jean Delvare

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