Hello >>> This means that the driver isn't reporting the values in RPM as it >>> should. Usually no compute statement is needed for fans. >> That's correct, the value is not in RPM, in the document >> '2005111153128.pdf' you can download on the fintek page >> ( http://www.fintek.com.tw/eng/products.asp?BID=4&SID=5 )its written on >> page 8: >> "Determine the fan counter according to: >> Count = (1.5?10^6) / RPM " >> That means that the driver is reporting the count value, not the rpm. >> So i have to compute in sensors.conf: >> RPM = (1.5?10^6)/ Count > >Thus this algorithm actually return sane RPM values for you? Now I >remember why I did not use this - Here the "Count" rises linear, which >makes "RPM =(1.5?10^6)/ Count" *lower* when fan speed increases. OTOH it >might be the fan is just too small and thus rotates too fast to be >reliably measured.. During implementation i tested different values for pwm here are my results: pwm1 fan1 fanspeed ( using: fanspeed =(1.5?10^6)/ fan1-value ) value value 13 2600 ~570 rpm 14 1900 : 15 1900 : 23 1100 : 34 770 ~1950 rpm : : : 90 385 ~3900 rpm 95 375 ~4000 rpm 100 365 ~4180 rpm 105 360 ~4230 rpm 110 345 ~4360 rpm 115 345 ~4360 rpm 120 335 ~4500 rpm 125 330 ~4630 rpm So if i start my pc the pwm is at ~32 and the fan is turning at ~1800rpm. If i increase the pwm value the value of the counter decreased! So if the pwm value is ~110 the van turns at >4000rpm and the fan1 value is ~365. The pc i use is a barebone by AOpen with an special mainboard and fan, both comes with the barebone. best regards christian. --------------------------------- Die etwas anderen Infos rund um das Thema Reisen. BE A BETTER WELTENBUMMLER! -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lm-sensors.org/pipermail/lm-sensors/attachments/20070628/650696b4/attachment.html
