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Old 10-28-2012, 06:30 PM   #1
Haythem
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Smile laptop fan always running


after installing slackware14 i noticed that the laptop's fan is running most of time and it may stop for one minute and then continue running again.
it's kinda an old toshiba laptop but it was ok with slack13.37.
 
Old 10-28-2012, 06:54 PM   #2
TommyC7
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Have you checked your BIOS? Some have options to keep your fan running constantly.
 
Old 10-29-2012, 02:23 AM   #3
ahzthecat
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Are you using the default KDE desktop? I've noticed my fan is very busy in 14.0, but I used XFCE in 13.37 so I figured it was just that.
TommyC7, what BIOS options should we be checking for?
 
Old 10-29-2012, 02:33 AM   #4
Mark Pettit
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First check to see how busy the machine really is. Use "top". Or "cat /proc/loadavg". You said the machine is old, meaning it's probably weak. If the machine actually busy (top shows user+system > 20%, or idle < 80%), then you have to reduce the number of active hard-running processes. Again, "top" will show you what is using the most cpu.
 
Old 10-29-2012, 02:39 AM   #5
hotchili
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Maybe you need to setup cpufreq so it scales down your cpu,
you can check current settings with:

Code:
$cpufreq-info
 
Old 10-29-2012, 04:07 AM   #6
ahzthecat
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As I suspected, KDE and Plasma Desktop are using the most clock...but it's pretty, so I'll deal with it for now.
 
Old 10-29-2012, 04:23 AM   #7
Haythem
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Quote:
Have you checked your BIOS? Some have options to keep your fan running constantly.
i did not make any changes to BIOS after moving to slack14
Quote:
Are you using the default KDE desktop? I've noticed my fan is very busy in 14.0, but I used XFCE in 13.37 so I figured it was just that.
yes i use KDE in slack14 , i used to use xfce before but i wanted to give KDE a try. i think i'll get back to xfce and see if this problem gone.

i'll check top and cpufreq and post the results when i back home, thank you all guys for ur replies ^^
 
Old 10-29-2012, 06:43 PM   #8
Haythem
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the cpu may reach 77% and the fan run fast when openning new tab in chrome.
load average from htop is 0.07 0.27 0.38
Quote:
bash-4.2$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 800 MHz - 1.87 GHz
available frequency steps: 1.87 GHz, 1.60 GHz, 1.33 GHz, 1.07 GHz, 800 MHz
available cpufreq governors: ondemand, userspace
current policy: frequency should be within 800 MHz and 1.87 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 800 MHz.
 
Old 10-29-2012, 08:27 PM   #9
jlinkels
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There were times when opening a web page in a browser required less computing power than a CRAY 1. Today that is not true anymore.

jlinkels
 
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