From: Len Brown <len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Cam <camilo-Nk/s8sJ9yP7QXOPxS62xeg@public.gmane.org>
Cc: ACPI Developers
<acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: APM sleep vs. ACPI S3 sleep
Date: 20 May 2004 23:57:47 -0400 [thread overview]
Message-ID: <1085111866.12354.567.camel@dhcppc4> (raw)
In-Reply-To: <40ACE6B4.4060408-Nk/s8sJ9yP7QXOPxS62xeg@public.gmane.org>
On Thu, 2004-05-20 at 13:11, Cam wrote:
> Hi
>
> APM sleep eg. when running linux 2.4 with the APM behaviour in the BIOS
> used to suspend the machine, the battery would last for a long time and
> the machine would be cold to the touch (ie it's at the ambient temperature).
>
> ACPI S3 sleep looks the same but the battery does not last long and the
> machine is warm to the touch.
>
> Has anyone else seen this behaviour? Is it possible that the machine is
> waking itself periodically or at a certain level of discharge? Is it
> possible to make the ACPI sleep deeper?
S3 is suspend to RAM, so the processor will be off, but RAM will still
be refreshed; and some devices may still consume power.
S4 is suspend to disk, and it should be as cold this way as S5.
-Len
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next prev parent reply other threads:[~2004-05-21 3:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-20 17:11 APM sleep vs. ACPI S3 sleep Cam
[not found] ` <40ACE6B4.4060408-Nk/s8sJ9yP7QXOPxS62xeg@public.gmane.org>
2004-05-21 3:57 ` Len Brown [this message]
[not found] ` <1085111866.12354.567.camel-D2Zvc0uNKG8@public.gmane.org>
2004-06-10 10:10 ` Cam
2004-05-24 17:13 ` Pavel Machek
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