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Old 11-19-2004, 04:50 PM   #1
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pb with processor fan speed

I'm french, so I'm sorry for my english...

I have a laptop and I have a problem with my processor's fan. When I turn on my computer the processor's fan works, but when I pass the LILO, the fan stops and my processor become very hot. I have a Mandrake 10.1.

Please help me!!


Last edited by stefdef; 11-19-2004 at 05:01 PM.
Old 11-19-2004, 08:52 PM   #2
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first you should move this to Hardware.
and second to figure what is wrong

Intel Pentium -M ??
Toshiba ? model?

need more info
Old 11-20-2004, 12:17 AM   #3
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You may need to ENABLE ACPI support.

Often the default is to disable ACPI...

As root, edit /etc/lilo.conf and find the entry which reads


Remove only the above, not the entire line using an editor.

Then type


at the root prompt...

Then reboot and again log in as root and type

chkconfig --add acpid
chkconfig -add acpi

Now Linux should be able to monitor and control the fan speed.

Note: It is NOT overly unusual to see the fan shut down on a laptop after starting the kernel.

The newer kernels issue commands to the processor which HALT it during wait loops, in an effort to conserve power and to keep the machine cool.

This means that often Laptops consume LESS power under Linux and operate with much less cooling.

However until you have established that everything is find, double check that your laptop is not overheating just to be safe.
Old 11-20-2004, 10:08 AM   #4
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1- My laptop is a Compaq evo n600c with a Pentium III - M 1,2Ghz.

2- My lilo.conf looks like this:

append="devfs=nomount acpi=on splash=silent"

I can see acpi=on and not acpi=ht
Old 11-20-2004, 08:14 PM   #5
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All should be working correctly but you may want to try installing the lm-sensors rpms.

urpmi sensors

and then run the sensors-detect script to set things up.

Then enable the acpid daemon as indicated.

Finally check your laptop's temperatures with the


command after you have things set up.


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