Hallo, I'm trying to reduce the speed of a cpu fan on a k8n-vm. The chip is for controlling the temp is a winbond w83627ehf. My kernel is 2.6.18.2. lm-sensors seems to work correctly, because on the 'sensors' command I'm getting the following output: w83627ehf-isa-0290 Adapter: ISA adapter Case Fan: 888 RPM (min = 1205 RPM, div = 8) CPU Fan: 2109 RPM (min = 1704 RPM, div = 8) fan3: 0 RPM (min = 45 RPM, div = 128) fan4: 0 RPM (min = 10546 RPM, div = 128) Sys Temp: +28?C (high = +45?C, hyst = +40?C) CPU Temp: +23.0?C (high = +45.0?C, hyst = +40.0?C) temp3: +25.0?C (high = +80.0?C, hyst = +75.0?C) Now the first question: I thought support for the voltage inputs was added at one of the last kernels. Is that correct? Now the PROBLEM: After calling pwmconfig (which seems to be the tool for configuring fancontrol) I'm getting this output: /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed After checking this script, it became clear that it needs something called pwm.. or fan.._pwm in the /sys/bus/i2c/devices/9191-0290 directory. ls does only show that: bus fan2_div fan4_alarm in0_max in2_input in4_alarm in5_min in7_max in9_input temp1_input temp3_alarm driver fan2_input fan4_div in0_min in2_max in4_input in6_alarm in7_min in9_max temp1_max temp3_input fan1_alarm fan2_min fan4_input in1_alarm in2_min in4_max in6_input in8_alarm in9_min temp1_max_hyst temp3_max fan1_div fan3_alarm fan4_min in1_input in3_alarm in4_min in6_max in8_input name temp2_alarm temp3_max_hyst fan1_input fan3_div hwmon:hwmon0 in1_max in3_input in5_alarm in6_min in8_max power temp2_input uevent fan1_min fan3_input in0_alarm in1_min in3_max in5_input in7_alarm in8_min subsystem temp2_max fan2_alarm fan3_min in0_input in2_alarm in3_min in5_max in7_input in9_alarm temp1_alarm temp2_max_hyst Next question: where are my pwm entries? The in_... where printed first, after I compiled the new kernel. (2.6.17->2.6.18) Is the pwm function not supported for this chipset in the above mentioned kernel? Maybe you guys can give some general information about the status of the chipset. Whats supported by which kernel and what is planned and what is not. That would be quiet helpful. Maybe there is a document more detailed than that: http://www.lm-sensors.org/wiki/Devices? Kind Regards Torsten