From owner-freebsd-acpi@FreeBSD.ORG  Sun Aug  9 17:57:11 2009
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Date: Mon, 10 Aug 2009 03:57:07 +1000 (EST)
From: Ian Smith <smithi@nimnet.asn.au>
To: Tim Matthews <tim.matthews7@gmail.com>
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Cc: freebsd-acpi@freebsd.org, "b. f." <bf1783@googlemail.com>
Subject: Re: laptop doesn't power off
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On Sun, 9 Aug 2009, Tim Matthews wrote:
 > On Sun, Aug 9, 2009 at 11:39 PM, b. f. <bf1783@googlemail.com> wrote:
 > 
 > > Before going to the trouble of enabling full debugging, what are the
 > > output of "uname -a", "kldstat -v", and "sysctl hw.acpi" ?
 > >
 > > b.

b.'s well onto it .. just a couple of things noticed in passing:

 > %uname -a
 > FreeBSD tim-laptop 7.2-RELEASE FreeBSD 7.2-RELEASE #2: Tue May  5 20:51:55
 > NZST 2009     root@tim-laptop:/usr/obj/usr/src/sys/GENERIC  amd64

Did you recompile GENERIC?  Is it still vanilla?

 >  4    1 0xffffffff80d5f000 1b70     acpi_sony.ko
 >     Contains modules:
 >         Id Name
 >          5 acpi/acpi_sony

Have you tried it without loading acpi_sony?  (just another vector)

 > %sysctl hw.acpi
 > hw.acpi.supported_sleep_state: S3 S4 S5
 > hw.acpi.power_button_state: S5
 > hw.acpi.sleep_button_state: S3
 > hw.acpi.lid_switch_state: NONE
 > hw.acpi.standby_state: S1
 > hw.acpi.suspend_state: S3
 > hw.acpi.sleep_delay: 1
 > hw.acpi.s4bios: 0

So you couldn't have expected acpiconf -s 4 to work (earlier reference)

 > hw.acpi.thermal.tz0.temperature: 58.9C
 > hw.acpi.thermal.tz1.temperature: 59.9C
 > hw.acpi.thermal.tz2.temperature: 59.9C

That's almost uncanny ..

cheers, Ian