1. Kernel drivers to read temperature/voltage/fan sensors (source) Lm-sensors is a hardware health monitoring package for Linux. It allows you to access information from temperature, voltage, and fan speed sensors. It works with most newer systems. This package contains the source for kernel modules that are necessary to access the data. The kernel sources must be installed to compile these modules. lm-sensors requires a separate set of drivers to access the I2C bus. If you are using kernel 2.4.13 or newer, it is sufficient to enable "I2C /proc support" and a set of I2C drivers in your kernel configuration. If you have an older kernel or want more up-to-date support, you need to also install the i2c-source package and build modules from that. From Debian 3.0r0 APT