From d44f0d6d1515e550b9cf774851b2af14d5f38394 Mon Sep 17 00:00:00 2001 From: "Mark D. Studebaker" Date: Sat, 26 May 2001 00:31:23 +0000 Subject: [PATCH] add some more info on setting fan divisors. git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1091 7894878c-1315-0410-8ee3-d5d059ff63e0 --- doc/fan-divisors | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/doc/fan-divisors b/doc/fan-divisors index a493e04c..00e1bf34 100644 --- a/doc/fan-divisors +++ b/doc/fan-divisors @@ -22,7 +22,8 @@ Fan Divisor Minimum RPM Maximum RPM Pick a divisor so that the nominal RPM is about 50% above the minimum. This is a good compromise between -margin and accuracy. +margin and accuracy. Note that most chips only support +fan divisors of 1, 2, 4, and 8. If you have a 0 RPM reading some or all of the time, increase the divisor until you get good readings. @@ -35,3 +36,12 @@ If you have a nominal reading more than 3 times the minimum, decrease the divisor to provide better accuracy. +- How to change fan divisors: + + Method 1: "echo x y z > /proc/sys/dev/sensors/...../fan_div" + where 'x y z' are the fan divisors for the three fans and '...' + is the sensor in question. + + Method 2: Put an entry "set fanx_div y" in the appropriate section + of /etc/sensors.conf and rerun 'sensors -s'. + (x is the number of the fan 1-3 and y is the divisor).