Date: Wed, 18 Aug 2010 18:07:13 -0500 From: Depo Catcher <depocatcher@gmail.com> To: Bruce Cran <bruce@cran.org.uk> Cc: Freebsd questions <freebsd-questions@freebsd.org> Subject: Re: Hibernation Message-ID: <4C6C67A1.90403@gmail.com> In-Reply-To: <20100818112658.00004b45@unknown> References: <4C6B9FF0.3040205@gmail.com> <20100818112658.00004b45@unknown>
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On 8/18/2010 5:26 AM, Bruce Cran wrote:
> On Wed, 18 Aug 2010 03:55:12 -0500
> Depo Catcher<depocatcher@gmail.com> wrote:
>
>
>> I can't find any good docs or guides to this. I checked the
>> handbook, but had a bunch of references to 5.x.
>> Can anyone point me to the right direction?
>>
>> I'd like to go with FreeBSD 8.1 amd64 for my next system.
>> Hibernation and Wake on Lan would both be useful.
>>
> The only support for hibernation is via the BIOS with a special
> partition. Unfortunately as far as I know it rarely, if ever, works.
> Windows (I don't know about Linux) bypasses the BIOS/ACPI and just
> dumps the contents of memory to disk before powering off.
>
My current system (6.4, really old hardware) shows this:
sysctl -a | grep -i hw.acpi
hw.acpi.supported_sleep_state: S1 S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S1
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
hw.acpi.verbose: 0
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 0
hw.acpi.reset_video: 0
hw.acpi.cpu.cx_lowest: C1
ampd is the command I'm looking for ?
Also what is the differences between Sleep, Stand By, Hibernation and
Suspend?
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