[Bug 272537] Re: cooling fan wont turn on

Petar Velkovski pvelkovski at gmail.com
Thu Dec 4 06:55:46 UTC 2008


I am using 2.6.27-10 kernel, Ubuntu 8.10. 
dmesg output:
.....
[ 2924.116311] ACPI: Unable to turn cooling device [f7418738] 'on'
[ 2930.116232] ACPI: Unable to turn cooling device [f7418738] 'on'
[ 2936.116236] ACPI: Unable to turn cooling device [f7418738] 'on'
[ 2942.116236] ACPI: Unable to turn cooling device [f7418738] 'on'
[ 2948.116234] ACPI: Unable to turn cooling device [f7418738] 'on'
....
I have Shuttle KPC K4500 PC. My PC's BIOS offers 4 different settings for the CPU fan speed. Low, Medium, High and Auto. After experiencing weird resets of my PC, I changed the settings from Auto to Medium and now the PC is stable again. If you are wondering why I'm writing this report, it is because I noticed that this bug report importance is marked as undecided. Please excuse me for giving lectures, but I strongly believe that any bug that could possibly lead to hardware damage, in this case to  the CPU because of a overheating, should be marked as critical. I triaged my problem, but there should be a mechanism for warning other users of Ubuntu for bugs of this type.

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cooling fan wont turn on 
https://bugs.launchpad.net/bugs/272537
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