Hello, Matthias I checked once again, and it must work - it works for me. So maybe you have ignore fan5 in /etc/sensors.conf or you have too old version of lm-sensors. Please check the fan5 directly in sysfs. ruik at ruik:/sys/class/hwmon/hwmon0/device$ ls *fan5* fan5_alarm fan5_div fan5_input fan5_min Thanks, regards Rudolf