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Date: Fri, 14 Aug 2009 17:55:24 +1000 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: "b. f." <bf1783@googlemail.com>
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Cc: freebsd-acpi@freebsd.org
Subject: Re: laptop doesn't power off
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On Fri, 14 Aug 2009, b. f. wrote:
 > On 8/13/09, Ian Smith <smithi@nimnet.asn.au> wrote:
 > > Just to clarify .. has there been some regression in i386 suspend/resume
 > > support in 8.0, or are you just talking about it on particular laptops?
 > 
 > There may be some problems with the new acpica in 8.0 that need to be
 > resolved, but I was referring to the fact that support for the deeper
 > sleep states is (and has been, even in earlier versions of FreeBSD)
 > incomplete, especially for SMP machines.

Alexandre Kovalenko wrote privately explaining that the issue is i386 
SMP.  I've had no problems with uniprocessor suspend/resume, both APM on 
4.5 through 5.5 and ACPI on 6.1 and 7.0, on both Compaq and IBM laptops, 
but we've seen enough other hardware here that doesn't fare so well.

cheers, Ian