Bug#259481: ACPI Turns Off Fan, Allowing Overheating
severity 259481 normal
thanks
On Wed, Jul 14, 2004 at 05:04:14PM -0700, Daniel Burton wrote:
> Package: kernel-image-2.6.7-1-686
> Version: 2.6.7-2
> Severity: important
> File: kernel-image-2.6.7
>
> As soon as I boot up and ACPI loads, the fan on my laptop turns off,
> allowing it to overheat. This is a Compaq Evo N620c. It also does this
> in kernel-image-2.6.6-1-686. I can't produce a boot log, because the
> overheating happens so fast that it literally won't boot up again
> afterwards (the automatic safety mechanisms kick in and shut it down),
> and I don't want to damage the hardware.
>
> I'll try to see if I can change the BIOS settings to override the
> the fan state and get a boot log.
>
Unfortunately there are tons of laptops with buggy bios out there.
Compaq ones do not appear particularly brilliant on this regards.
First of all, load acpi package and run acpi -t, this could
activate the fan. Unfortunately it should probably stay on
forever in this manner.
Please provide a DSDT dump of your box
cat /proc/acpi/dsdt > dsdt.aml
iasl -d dsdt.aml > dsdt.asl
That's the possibility that it needs hacking to work.
--
Francesco P. Lovergine
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