I have installed i8kutils, and edited things according to guides on internet, but nothing changes the overheat and when I run pwmconfig, this appear in the end:
hwmon1/fan2_input current speed: 0 ... skipping! There are no working fan sensors, all readings are 0. Make sure you have a 3-wire fan connected. You may also need to increase the fan divisors. See doc/fan-divisors for more information.
I have read that maybe this could be a conflict between linux kernel and the graphic card (or something) and I have installed the fglrx drivers but nothing is solved!
I have a Dell laptop n4050 with Ubuntu 14.04 (trusty) with a Linux Kernel 3.18, processor : Intel Core, and graphics card: Intel Corporation 2nd Generation. Please any help is needed. (Also I a n00b with linux)