PC Cooling Fan Runs At High Speed After Kubuntu Install

[mechanism]

My variable speed cooling fan is no longer variable. It runs wide open all the time but only while running Kubuntu. I have left the computer at idle for long periods of time to see if the fan slows down but it does not. How can I turn the fan speed down?

Thanks,
M

[SheeEttin]

Re: PC Cooling Fan Runs At High Speed After Kubuntu Install

I'd open up Adept and search for "fan".

[mechanism]

Re: PC Cooling Fan Runs At High Speed After Kubuntu Install

Adept did not return any programs for "Fan" or "Thermal". Should I be looking for a specific program? Shouldn't a fan control program already be installed by default? Otherwise, how would Linux control fan speed?

My fan is still running wide open so any help here would be appreciated.

M

[mechanism]

Re: PC Cooling Fan Runs At High Speed After Kubuntu Install

Update -

I found this thread in the Ubuntu forum regarding PC Fan speed

http://ubuntuforums.org/showthread.php?t=545763&highlight=fan+speed
so it is an issue for others as well.

I followed these directions (specifically, the directions in the external link provided in the Ubuntu post) which involved installing lm-sensors and creating a shell program to control or at least monitor fan speed. My results are as follows:

Do you want to add these lines to /etc/modules automatically? (yes/NO)y
michael@closet:~/Desktop$ sudo /etc/init.d/module-init-tools
* Loading kernel modules... * Loading manual drivers... [ OK ]
michael@closet:~/Desktop$ sudo sensors -s
No sensors found!
Make sure you loaded all the kernel drivers you need.
Try sensors-detect to find out which these are.
michael@closet:~/Desktop$ sensor-detect
bash: sensor-detect: command not found
michael@closet:~/Desktop$ sudo sensor-detect
sudo: sensor-detect: command not found
michael@closet:~/Desktop$


I've basically gotten in over my noob head here so any help on how to get my cpu fan to slow down would be appreciated.

Thanks,
M

[Snowhog]

Re: PC Cooling Fan Runs At High Speed After Kubuntu Install

lm-sensors isn't the only package required. Check to see that you also have intalled i2c:

You will need lm-sensors and i2c kernel modules to use this package. For 2.4 kernels, this requires either installing prebuild modules or building them using the lm-sensors-source package. For 2.6 kernels, use the modules that are already in the kernel tree.

[Rog131]

Re: PC Cooling Fan Runs At High Speed After Kubuntu Install


You could check that there are no runaway processes:

K > System > KSysGuard or in the konsole:

top

This is from Gutsy:
Topic: strigidaemon Alert!
http://kubuntuforums.net/forums/inde...opic=3086410.0

12 hours after last evening's Gutsy updates, I checked my (theoretically) idling desktop system and was alarmed to discover that the CPU cores were at 55 and 65 degrees C, with fans running full out. A little investigation of running processes revealed that "strigidaemon" was consuming 100% of the user session resources.

And check this:
CPU overheats during high usage "throttling <not supported>"
https://bugs.launchpad.net/ubuntu/+s....20/+bug/22336


About lm-sensors (utilities to read temperature/voltage/fan sensors):

SensorInstallHowto
https://help.ubuntu.com/community/SensorInstallHowto

HOW TO: Install and configure lm-sensors
http://ubuntuforums.org/showthread.php?t=2780

Here it was easy. After i installed lm-sensors:

sudo sensors-detect

and

To make the sensors modules behave correctly, add these lines to
/etc/modules:

#----cut here----
# I2C adapter drivers
i2c-nforce2
# Chip drivers
asb100
#----cut here----

Do you want to add these lines to /etc/modules automatically? (yes/NO)

Reading sensor outputs:

:~$ sensors

Note
Here lm-sensors outputs are a bit buggy:
CPU Temp is M/B Temp and fan rpm's are too high (2x).

[mchuskie]

Re: PC Cooling Fan Runs At High Speed After Kubuntu Install

michael@closet:~/Desktop$ sudo sensor-detect
sudo: sensor-detect: command not found

The command you want is sensors-detect!

[mechanism]

Re: PC Cooling Fan Runs At High Speed After Kubuntu Install

Thanks for the update. I completed a reinstall of Kubuntu (full update) and now the fan works as it should. Thanks to those who helped out and to the Kubuntu team that keeps those updates rolling out.

M