w3j fan is pissing me off. what can i do?

I've got a Core Duo (Yonah) w3j from a few years ago. My laptop continually goes through the following loop:

Code:

while (forever) {
    cpu temp increases to 60 degrees over the course of 1 minutes
    fan kicks in and brings temp back down to 50 degrees over the course of 2 minutes, which as a result pisses off me and my classmates
}

I have done the following already without any luck: updated to latest BIOS, removed all dust from chassis and heatsink, underclocked X1600 vga (25% reduction in clock freq) and cpu (limited to half clock freq), removed old thermal paste from cpu and applied a perfect amount of arctic silver 5. I run ubuntu and therefore can't use p4g. Most of the sensors can't be detected and the fan can't be controlled

Now all I can think of is replacing the CPU with a Core2Duo Merom. Will this solve the annoying fan problem?

I'd prefer that the fan never turn on because of the lecture type environments I bring my laptop to... is that even possible? I only browse the web with this laptop, nothing computationally intensive.

 

Have you undervolted your CPU? Also, in my experience, less Arctic Silver is better than more.

 

I'm not familiar with Ubuntu, but maybe THIS can help.

 

Don't think that's possible, it would fry the CPU/GPU especially on this small laptop.

I would advise trying different (older/newer) BIOS versions, I believe the thermal profiles are in the BIOS, and the BIOS controls the fan, rather than the operating system (although bugs in OS power management CAN cause the fan to malfunction).