lm78 fan speeds have too high minimum

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Hi,

This is a LM78 chip on a PR440FX board.  lm-sensors is 2.9.1 from Debian
'sarge'.

# sensors
lm78-isa-0290
Adapter: ISA adapter
VCore 1:   +3.31 V  (min =  +3.14 V, max =  +3.47 V)
VCore 2:   +3.26 V  (min =  +3.14 V, max =  +3.47 V)
+3.3V:     +3.25 V  (min =  +3.14 V, max =  +3.47 V)
+5V:       +5.11 V  (min =  +4.76 V, max =  +5.24 V)
+12V:     +12.04 V  (min = +11.37 V, max = +12.59 V)
-12V:     -12.91 V  (min = -13.80 V, max = -11.40 V)
-5V:       -5.01 V  (min =  -5.25 V, max =  -4.74 V)
fan1:     4500 RPM  (min = 5314 RPM, div = 2)          ALARM
fan2:     4753 RPM  (min = 18750 RPM, div = 2)          ALARM
fan3:     4821 RPM  (min = 15000 RPM, div = 2)          ALARM
temp:      +33.0 C  (high =   +67 C, hyst =   +75 C)
vid:       +3.30 V
alarms:   Chassis intrusion detection                  ALARM

Note the absurdly high fan minimums.  This was not a problem in previous
versions, but I don't know when it actually changed.  How can the
minimums be corrected?  Using the fan divider on fan1 and fan2 didn't
help, and on fan3 the divider is not modifiable:
http://www.cpemma.co.uk/lospeeds.html

I'm also looking for a way to disable the chassis intrusion alarm
through software since no connector for it is available on my
motherboard.

Thanks,

-- 
Ryan Underwood, <nemesis at icequake.net>




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