Board is ASUS P4T requiring i2c-i801 and w83781d modules, with sensors reporting as99127f-i2c-0-2d. Tried setting fan1_div, fan2_div and fan3_div to 8 in sensors3.conf and sensors.conf but even after reboot div=2 so the minimum reportable fan speed is 2657 RPM. BIOS is not too great at displaying low fan speeds either but ASUS Probe in Windows goes down to 900 RPM or lower so the hardware is capable. Xubuntu Karmic alpha 3 system plus all updates. sensors, libsensors v3.0.2 kernel 2.6.31-5-generic Thanks in advance for any assistance.