lm_sensors on RedHat 7.3

Mark D. Studebaker mds at paradyne.com
Sat Oct 12 17:27:28 CEST 2002

David Mathog wrote:
> Re:   Ticket # 994
> Ok, I finally got it to build/work RedHat 7.3.  The problem was that the
> code in Makefile for both i2c and lm_sensors which sets the destination
> directory did not work.  The modules were either not being installed
> (in some cases) or going to the wrong directory (in others). I had to
> manually
> set that  to install.  In both Makefiles I had:
> MODPREF := /lib/modules/2.4.18-3
> on the A7V266E machines and it worked.  However when I set that to
> MODPREF := /lib/modules/2.4.18-3smp
> on the Tyan S2468UGN lm_sensor's install stuck the files under
> ..../misc instead of in the right place, and I had to manually copy them
> up one level to the right directory. I also manually set the SMP
> variable
> which may or may not have been necessary.

see the comment in kernel/chips/Module.mk for an explanation.

> There were a couple of bugs in the /etc/r2.d/init.d startup
> script for lm_sensors.  The repaired one is attached.  (Basically wc
> was returning " 2" instead of "2" for the number of module lines and
> that was messing up the start/stop logic.  I also made it format the
> responses to look nicer on startup with green/red success/failure
> messages.

thanks, I'll merge your changes in.

> Lastly, sensors always shows the negative voltage ranges in the ALARM
> state even when the measured value falls within the specified min/max
> range.
> This was for chip "as99127f" on the Asus A7V266E motherboard.  (I got
> the Tyan 2468 to the point where it would start lm_sensors but have not
> yet worked out the sensors.conf file for it.)  For instance, when -5v
> measures -5.03 and min is -5.48 and max is -4.50 the ALARM is shown.
> Ditto for the -12V range.  I think this is probably a bug in the
> "sensors"
> program having to do with negative voltage comparisons.  Is there a
> known
> fix for it?

The ALARM indication comes from the chip. The sensors program does not
do comparisons.
We don't have as99127f documentation so the ALARM bit mapping could be

> Thanks,
> David Mathog
> mathog at caltech.edu
> Manager, Sequence Analysis Facility, Biology Division, Caltech
>                  Name: lm_sensors
>    lm_sensors    Type: unspecified type (application/octet-stream)
>              Encoding: base64

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