APM, my laptop, and the CPU fan

Stephen Rothwell sfr at canb.auug.org.au
Wed Aug 14 17:34:17 EST 2002

Hi Michael,

On Wed, 14 Aug 2002 13:08:57 +1000 Michael Still <mikal at stillhq.com> wrote:
> Sometimes APM fails me on 2.4.18, and I come back to a hybernated laptop
> with a flat battery. I finally worked out why... If the CPU fan is running
> when the laptop enters hybernation, then it stays running once the laptop
> is hybernated.

By hybernated (sic) do you mean "context saved to disk and machine
powered off" or do you mean "context still in memory and CPU off"?

> Is this an APM thing? Where should I start looking? I grepped for thw work
> fan in apm.c, and found nothing...

Entirely up to the BIOS (as long as you tell it the right thing).

Stephen Rothwell                    sfr at canb.auug.org.au

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