Hi Simone, This is a hardware problem that has no easy solution. I believe you have fans with three pins and three wires. (If the fan that is giving you the wrong value is a four-wire fan, then this must be something else.) Three-wire fans get an RPM count while the power is being rapidly turned on and off. It can cause this kind of behavior. Hope this helps, David On 9/8/06, simone marchi <simone.marchi at ilc.cnr.it> wrote: > Dear all, > I've a problem with that sensors about CPU fan RPM value reported. > My motherboard is a Asus A8V-E SE. > I use SuSE 10.1. (2.6.16.21-0.13-default) > > The sensors command report sometimes a correct value (~2200rpm) > and other time a wrong value (~140rpm). > I've seen that the multiplier of the fan (fan2_div for me) > switch between 4 and 64. > I tried to force manually the value to 4 by this command: > > echo -n "4" > /sys/bus/i2c/devices/9191-0290/fan2_div > but I've got a "permission denied" (I ran the command as root) > > If I list that file I got that result: > -r--r--r-- 1 root root 0 2006-09-08 16:43 > /sys/bus/i2c/devices/9191-0290/fan2_div > > So, I can't modify that value. > I've tried to chmod the fan2_div, but I can't chage the value yet. > > I tried also with a more recent kernel (2.6.18-rc6) but > I got the same error > (with new kernel I can monitoring, in addition, the voltages) > > Does anyone help me? > > Thank you > Ciao simone > > > _______________________________________________ > lm-sensors mailing list > lm-sensors at lm-sensors.org > http://lists.lm-sensors.org/mailman/listinfo/lm-sensors >
