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Subject: RE: sleep forever in ACPI mode S3
Date: Wed, 4 Jun 2003 13:25:36 -0700
Message-ID: <F760B14C9561B941B89469F59BA3A847E96F24@orsmsx401.jf.intel.com>
Thread-Topic: sleep forever in ACPI mode S3
Thread-Index: AcMq1SYuE69phUZCS92fWXqwtcG28gAAd3IQ
From: "Grover, Andrew" <andrew.grover@intel.com>
To: "C. Scott Ananian" <cananian@lesser-magoo.lcs.mit.edu>,
       <linux-kernel@vger.kernel.org>
Cc: <acpi-support@lists.sourceforge.net>
Sender: linux-kernel-owner@vger.kernel.org
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> From: C. Scott Ananian [mailto:cananian@lesser-magoo.lcs.mit.edu] 
> echo 3 > /proc/acpi/sleep
>  appears to work correctly on my IBM Thinkpad X20 -- except that it's
>  impossible to wake the machine back up.
> echo 1 > /proc/acpi/sleep
>  has a similar problem -- ordinary keypresses don't wake the 
> machine --
>  but at least in this case the "power button" will bring the 
> machine back.
>  [neither the lid nor the sleep button do, though.]
> 
> Is this a known problem?  What keypresses are *supposed* to wake the
> machine?  I looked through the code, but it looks like we 
> punt off to the
> ACPI firmware to do the actual sleep -- can anyone enlighten me on the
> intended mechanism behind 'wake-from-sleep'?

Does it start to come back but then not make it, or is it just
unrevivifiable?

In any case, sleep/resume is a work in progress that won't work reliably
in the near-term.

Regards -- Andy
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