I have recently noticed that one of the fans on a box I am monitoring is
no longer sending a tachometer signal, so sensors(1) indicates the
RPM=0. This is as you would expect. However, I would expect
sensors(1) to report an ALARM for this fan. That is not what I am seeing:
smsc47m1-isa-0680
Adapter: ISA adapter
superio,Fan1:
0 RPM (min = 1396 RPM, div = 8)
superio,Fan2:
0 RPM (min = 1396 RPM, div = 8)
# cat /proc/sys/dev/sensors/smsc47m1-isa-0680/alarms
0
Hmmm... This indicates to me that maybe the part doesn't
think there's a problem??
I really need to get alarms in the cases where the fans are not working.
In researching this, the fan tachometer has not been working for a long
time (wiring problem), so if it makes any difference, the superio chip
has never seen any tachometer signals since power on.
Any suggestions??
David
