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Date: Fri, 1 Oct 2010 18:41:56 +0000
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From: Paul B Mahol <onemda@gmail.com>
To: Ian Smith <smithi@nimnet.asn.au>
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Cc: Matt <sendtomatt@gmail.com>, freebsd-acpi@freebsd.org,
	freebsd-current@freebsd.org
Subject: Re: Sleep/Lenovo SL410
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On 10/1/10, Ian Smith <smithi@nimnet.asn.au> wrote:
> On Thu, 30 Sep 2010, Matt wrote:
>  >  Success!
>  >
>  > After setting every possible suspend/resume sysctl,
>  > "sysctl hw.pci.do_power_resume=0"
>  > allowed suspend and resume. Still beeps 1-3 times before suspend, with
> rapid
>  > sleep light flashing until suspend complete.
>
> Interesting; $someone may document do_power_resume a bit more $someday?
It is already documented.
>
>  > Kernel conf is attached.
>  > World built from last Friday's CVS, -CURRENT
>  >
>  > acpiconf -s3 works perfectly from console
>  > previously opened windows are garbled until refresh in X
>
> Some thinkpads have responded positively in this regard to setting
> hw.syscons.sc_no_suspend_vtswitch=1
>
>  > acpiconf -s4 causes shutdown, does not resume on power on.
>
> Suspend To Disk is not expected to work; your laptop (like most) has no
> BIOS support for S4, as per your hw.acpi.s4bios: 0

Suspend to disk does not work because FreeBSD does not support it.
(s4bios is irrelevant here)