Hi Juerg, # cd /sys/class/hwmon/hwmon0/device # echo 2 > pwm2_auto_channels_temp # echo 2 > pwm2_enable now, fan goes off What are these for, and why pwm1: # echo -99999 > pwm1_auto_point1_temp # echo -99999 > pwm1_auto_point2_temp # echo 999999 > pwm1_auto_point3_temp # echo 999999 > pwm1_auto_point4_temp fan still off after above commands echo 200 > pwm2_auto_point3_pwm fan still off Why do I have to apply those commands again: # echo -99999 > pwm1_auto_point3_temp # echo 999999 > pwm1_auto_point3_temp fan off # grep "" pwm2 200 fan off After all, fan is off and does not spin. I am running burnMMX to produce some heat... seems fan does not run at all. # grep "" * alarms:4608 cpu0_vid:1250 fan1_alarm:0 fan1_div:2 fan1_input:0 fan1_min:3006 fan2_alarm:0 fan2_div:2 fan2_input:0 fan2_min:3006 in0_alarm:0 in0_input:1952 in0_max:2067 in0_min:1868 in1_alarm:0 in1_input:1952 in1_max:2119 in1_min:1910 in2_alarm:0 in2_input:1221 in2_max:1253 in2_min:1180 in3_alarm:0 in3_input:1942 in3_max:2119 in3_min:1733 in4_alarm:0 in4_input:2015 in4_max:2203 in4_min:1795 in5_alarm:0 in5_input:3283 in5_max:3465 in5_min:3133 modalias:vt1211 name:vt1211 pwm1:100 pwm1_auto_channels_temp:1 pwm1_auto_point1_pwm:0 pwm1_auto_point1_temp:0 pwm1_auto_point2_pwm:255 pwm1_auto_point2_temp:0 pwm1_auto_point3_pwm:100 pwm1_auto_point3_temp:255000 pwm1_auto_point4_pwm:255 pwm1_auto_point4_temp:255000 pwm1_enable:0 pwm1_freq:45000 pwm2:200 pwm2_auto_channels_temp:2 pwm2_auto_point1_pwm:0 pwm2_auto_point1_temp:0 pwm2_auto_point2_pwm:255 pwm2_auto_point2_temp:0 pwm2_auto_point3_pwm:200 pwm2_auto_point3_temp:204000 pwm2_auto_point4_pwm:255 pwm2_auto_point4_temp:204000 pwm2_enable:2 pwm2_freq:45000 temp1_alarm:0 temp1_input:116000 temp1_max:147000 temp1_max_hyst:142000 temp2_alarm:0 temp2_input:57000 temp2_max:65000 temp2_max_hyst:60000 vrm:85
