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Old 10-14-2011, 10:21 PM   #1
alekosbiiofilos
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Why does my laptop just turns off unexpectedly


Ok, i have Arch Linux, cpu-freq-utils (ondemand governor) and laptop-mode
Why when im compiling stuff or alignming a big bunch of sequences (bioinformatics), my laptop just turns off
i have a Toshiba Satellite A665, Processor Intel Core i7 at 1.6 GHz
this is not a server but i think it should be capable of decent computation withowut turning off!

thank you!!
 
Old 10-14-2011, 11:33 PM   #2
macemoneta
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That sounds like an overheat. Many Toshiba laptops seem to have overheating problems, and a Google search on that model and overheat got many hits. I suggest you try to see if Toshiba has a BIOS update to turn the fans on high earlier to prevent the problem.
 
Old 10-15-2011, 01:34 AM   #3
alekosbiiofilos
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well, that make sense, but why in other distros that doesn't happen?
should i tweak cpufreq or laptop mode in a special way??
 
Old 10-15-2011, 01:55 AM   #4
macemoneta
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With ondemand, you can try:
Code:
echo 99 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
That will keep the CPU running at a lower power level as long as possible.

You can also try switching to the conservative governor (for each CPU):
Code:
echo "conservative" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
You can also make conservative more conservative with:
Code:
echo 95 > /sys/devices/system/cpu/cpufreq/conservative/down_threshold
Try the various configurations to see which works for you.

Last edited by macemoneta; 10-15-2011 at 03:21 AM. Reason: Updated sys locations
 
  


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