Author Topic: acpi and laptop fans  (Read 957 times)

Offline Trio3b

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acpi and laptop fans
« on: June 10, 2011, 06:24:07 PM »
Desktop user used to hearing steady drone of cpu and chassis fans. New to laptops and netbooks.( yes I'm about 5 yrs behind the times). I usually just assume that if the lappy isn't on fire or shutting down then all is fine.. I recall lmsensors damaging certain thinkpads several yrs ago so  never really got that involved in cpu scaling/ fan cooling issues. I really don't pay attention to any of that as long as the lappy is running and not uncomfortably hot.

What is the state of affairs with linux and laptop acpi /BIOS  cpu/power/cooling management  today?

I have two problems:

1. Since I don't run Windows I have no point of reference to compare laptop fan  speed control and related heat issues compared to running another OS.

2. I almost always use laptop cooler pads so I may be distorting my perception of what is hot/warm/cool

I have read threads here and elsewhere about fans not working . etc.(there are some threads about Insyde H2O BIOS in Toshiba laptops and fan problems). Running PCLOS 2010.12 KDE on both  a Toshiba A300 series where fan runs continuously which is fine by me and a Toshiba NB305 netbook where the fan kicks in but only when warm/hot and have left both running overnight just to see but so far no issues.

Laptop mode shows checked at boot in PCC system but no t running. Another thread indicates this is for only running on battery? (currently on mains only). Sound right?

Any help appreciated
« Last Edit: June 10, 2011, 08:28:16 PM by Trio3b »