processor overheating

anton171 · #1 2009-10-14, 07:47 PM CDT

I have installed Fedora this day on my Acer Extensa 5630 laptop and I have a problem with processor's temperature. Lm-sensors show about 68C and 50C on cores when system idle. And when I start to update my system or somthing else the processor overheats. Before Fedora I worked with Debian and I didn't have this problem. Could you advice me how do I try to fix it?

droidhacker · #2 2009-10-15, 07:32 AM CDT

Quote:

Originally Posted by anton171

I have installed Fedora this day on my Acer Extensa 5630 laptop and I have a problem with processor's temperature. Lm-sensors show about 68C and 50C on cores when system idle. And when I start to update my system or somthing else the processor overheats. Before Fedora I worked with Debian and I didn't have this problem. Could you advice me how do I try to fix it?

Does the CPU fan come on at all?
If not, then you might have one of those software-controlled CPU fans... acer w/intel typically has this problem.

There is a fix for it, but I don't remember where I found it. Debian may have it built in.

Reindeer · #3 2009-10-15, 07:53 AM CDT

Quote:

Originally Posted by anton171

Lm-sensors show about 68C and 50C on cores when system idle

68 ºC = 154.4 ºF
50 ºC = 122 ºF

Yeah, wow, that's pretty hot.
Mine runs at 42ºC (107.6 ºF) under a full load, streaming audio and playing a game. 32ºC (89.6 ºF) is the average temp.
I have five fans in my system though, a necessity for the kind of loads that I place on the system.
If your fan is not operational, then you need to look into a software (or hardware) fix.
If it happened at the *exact* moment of the upgrade, then it points to software.
Did you make changes in the BIOS at all? Some control the fan speed, like mine.
Have you checked your process table for runaway processes?
Lappys can't live without the fan. Consider an external fan blowing into the system until you can get this fixed as a temporary measure, or a cooling mat, or both.

troyatlarge · #4 2009-10-15, 08:10 AM CDT

We have had a couple cases in the shop of high temperature reports which are not actually correct. Feel the bottom of your laptop and make sure its as hot as claimed - and you will notice if it is. On the other hand we have had a couple of acer (and other model) meltdowns wherein the AMD chip actually melts the boards (the thing must turn red when that takes place)!

You can get the "Trinity Rescue Kit", which is a Linux distro for working on operating systems while they are not active. It fits on a CD so is not a big download. It comes with a way to run your CPU at 100%. If it is actually the problem, the high run will cause all sorts of weird crap to take place - if its not the problem, then you will know that too, for sure (just don't run it so long that you have a little Chernobyl on the wifes new sofa!!

snookerzysta · #5 2009-10-15, 08:11 AM CDT

I've got this problem, too. Maybe I don't have as high temperatures as you, but it's higher than on windows or gentoo.

on Gentoo I had 40C when system idle, 41C on Windows and on Fedora 52C...

and I have Acer Aspire 5930.

anton171 · #6 2009-10-15, 01:59 PM CDT

The CPU fan works correctly ant my laptop is really hot... I have much lower temperature in Windows too.
I thought maybe it happened because I didn't have ATI video driver and gnome used CPU every time. I seted init level to 3 and now have lower temperature (56C and 42C on cores) when system idle. Top shows me that about 99% of CPU is free but the temperature don't decrease anyway and the fan works on high speed.
Maybe the problem in kernel configuration... What do you think about it?

stevea · #7 2009-10-15, 06:39 PM CDT

At runlevel 3 you get 56/42C and the fans run continually. But you say "but the temperature don't decrease anyway".

What are the temperatures under Windows ? What are you expecting ?
I think you should monitor acpi with acpi_listen, but also check the lmsensors chips found and verify they are correct.
Is cpuspeed the speedstep controller running ?

anton171 · #8 2009-11-04, 05:54 PM CST

sorry for delay...
lm-sensors work coorectly. cpu freq controller is running (cpu works on 800MHz). i have 45/40C in debian.

guitar player · #9 2009-11-04, 10:12 PM CST

Interesting I also ran fedora on my acer(timeline) laptop, and I also noticed that my laptop was getting hot. I was having a few other problems with fedora so just on a whim I tried the opensuse 11.2 RC (I wanted a good KDE distro) It runs almost as cool as windows. Maybe that slightly newer kernel making a difference I don't know, nor do I know enough to find out what the difference is.