From owner-freebsd-acpi@FreeBSD.ORG  Fri Oct  1 05:02:14 2010
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Date: Fri, 1 Oct 2010 15:02:09 +1000 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: Matt <sendtomatt@gmail.com>
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Cc: freebsd-acpi@freebsd.org, freebsd-current@freebsd.org
Subject: Re: Sleep/Lenovo SL410
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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?

 > 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

cheers, Ian

 > Swap is 2x RAM.
 > 
 > VMstat -i rate is 540.
 > 
 > Thank you FreeBSD!
 > 
 > Matt