Any idea how to make a fan in an HP laptop spin at lower temperatures? The fan in my Pavilion dm-1 only starts spinning when CPU reaches 75°C and enters full speed when the GPU also becomes 75°C. Which is strange because this CPU and GPU are one and the same thing.. an APU. And overheating freezes often happen at around 75-80°C.. which isn't too much of a headroom really. I'd rather have it kick in at 50-60°C already, but would like to avoid using the power of the soldering iron for it.. I've already lost a fan to that previously (current one is a spare part from AliExpress). Granted, my soldering experience was much less back then.. nowadays I can probably even solder 1206 SMD packages comfortably. But I don't want to risk it, and I've got experience with custom kernels anyway.. are there any fan speed governors in the kernel that you know of?

FWIW, fancontrol doesn't seem to be supported on this laptop, and neither is pwmconfig. Perhaps I'll have to stick to the electronics method after all? Given that it's just a 5V fan, I guess that I could feed it power by tapping some power from a USB rail and controlling its speed from an ATtiny85.. but inside the laptop there isn't enough space for that and I don't feel like freeing this hardware out of its laptop chassis yet (though that is on the list). Either way running at 60°C under no load is terrible.. some HP certified enganeering "feature" I guess...

I'm looking to get a laptop, and I want your opinion on which one to get, because I'm a dev and don't care about whatever most reviews are looking at. Here is what I want from it:
1. I'll be running linux on it
2. I need it to be powerful enough to go through heavy development
3. It has to be decent sized 15" and below
4. It needs to stay cool under light load, under heavy load I've got a good cooling pad
5. Battery is not that important, and discrete graphics are not that important

I will be hooking it up to a keyboard/mouse/monitor setup when at home or work

Any suggestions? I've been looking at lenovo thinkpads for their ruggedness and dependability and Dell laptops as they've been around for a long time. Ultrabooks (like the XPS) are appealing but I don't know how well they deal with heat and thermal throttling under heavy load?