Hi Christian, I am the author of the pc87360 hardware monitoring driver. > I checked the versions like you told me: > siggi:~# sensors -v > sensors version 2.9.0 with libsensors version 2.9.0 The problem you have is expected, and is caused by a recent fix I made to the pc87360 driver. The PC8736x chips can have their fan speed controller disabled. I changed the pc87360 driver to *not* create sysfs files for disabled fans, as they would always read 0 anyway. The Soekris net4801 has no fans AFAIK, which explains why the fan controllers are disabled. By the time I changed the driver, I made a change to the "sensors" program so that it doesn't complain on apprently missing fan files, but that was after lm_sensors 2.9.0 was released. So, either upgrade to 2.9.1, or add the following lines in your sensors.conf file: ignore fan1 ignore fan2 ignore fan3 (If your Soekris board *does* have fans connected and you think the PC87366 chip should be able to monitor them, we'll of course investigate.) -- Jean Delvare