Fan speed increasing/Decreasing in Ubuntu 7.04

[LeviS LoVEr]

I use Windows Xp and Ubuntu.

When i use Ubuntu the speed of fans increase and decreases and make a lot of noise..

Also the mouse just stops and starts moving as a movie does when we try to play it through a scratchy Disc..

my sysem Specs are:

Intel dual core 3.0 Ghz

512 RAM

Intel Original 945 Motherboard

arnd 700 Mb SWAP

What could be the problem?

[GatorV]

Mmm that has happened to me when I have my laptop on my bed, seems to be a over-heating problem, what I do is I lift it a little bit so it cools and then it unfreezes.

[LeviS LoVEr]

but this thing doesnt happen in windows xp..

[markwolfe Veteran]

Maybe XP lets it get hotter before kicking in the fans?

I'm not experienced with temperature control/laptops. But if you have some sensors running, you can see your temps in Ubuntu and try to note when they kick in, and when they slow back down. Compare to XP, if you want to match.

It could also be that, for whatever reason, your CPU speed regulator is off, or is set aggressively to keep your speeds higher. I think the daemon for that is powernowd, but don't quote me on it.

[dmd3x]

maybe there is a rat using your computer as a restroom and it decides to take a dump every time you boot into ubuntu. therefore, it needs to tweak the fan to exhaust the smell out more quickly.

[tsupersonic]

Any linux distro puts more CPU load than Windows XP or Windows Vista for that matter. I have had temps hit 78C on my laptop in linux distros. It tops out at 70c on XP and Vista. Of course, there are nice 3rd party tools to undervolt my procesor in Windows, wish there was something like Rightmark's CPU utility for linux... :(

My fan runs constantly in linux...Not good for laptop's life for the CPU temps to be that high!

[GatorV]

True also compiz puts a big foot print in the CPU, I had that happened in Ubuntu a lot in the begining an in XP only once... (the difference is that Windows = BSOD, Ubuntu = Only freezing until 10 seconds of cooling..)

[Beastage]

True also compiz puts a big foot print in the CPU, I had that happened in Ubuntu a lot in the begining an in XP only once... (the difference is that Windows = BSOD, Ubuntu = Only freezing until 10 seconds of cooling..)

lol what? so now ubuntu is hardware proof as well?! come on ...

to the OP, are you sure it is not the video card fan? I have raden 3870 and every time I boot into ubuntu or log off it the video card spin to top speed unrelated to heat.

[GatorV]

Not hardware proof, but I experimented the BSOD on XP, while on ubuntu I only had to lift it a little bit so the fan could "breath" more easily, and it would unfreeze...

[markwolfe Veteran]

Compiz would only load the CPU if there was no capable GPU, or you weren't using the 3D drivers, so all the calculations for effects had to be done by the CPU instead of the graphics card.

It is no coincidence that the same thing happens in Windows with Aero. ;)