i've used sensors-detect and it gave me: Now follows a summary of the probes I have just done. Just press ENTER to continue: Driver `coretemp': * Chip `Intel Core family thermal sensor' (confidence: 9) Do you want to overwrite /etc/conf.d/lm_sensors? (YES/no): Copy prog/init/lm_sensors.init to /etc/rc.d/lm_sensors for initialization at boot time. You should now start the lm_sensors service to load the required kernel modules. and sensors started to give me: sensors coretemp-isa-0000 Adapter: ISA adapter Core 0: +56.0°C (high = +100.0°C, crit = +100.0°C) coretemp-isa-0001 Adapter: ISA adapter Core 1: +60.0°C (high = +100.0°C, crit = +100.0°C) acpitz-virtual-0 Adapter: Virtual device temp1: +60.0°C (crit = +94.0°C) was not suppose to give the fan's rpm's and so and so? oh, pwmconfig does outputs me this: pwmconfig # pwmconfig revision 5630 (2009-01-29) This program will search your sensors for pulse width modulation (pwm) controls, and test each one to see if it controls a fan on your motherboard. Note that many motherboards do not have pwm circuitry installed, even if your sensor chip supports pwm. We will attempt to briefly stop each fan using the pwm controls. The program will attempt to restore each fan to full speed after testing. However, it is ** very important ** that you physically verify that the fans have been to full speed after the program has completed. /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed as this have to do with the supose missing values on lm sensors?