Date: Wed, 4 Nov 2009 18:25:52 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Yuri <yuri@rawbw.com> Cc: Paul B Mahol <onemda@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Does hybernate/wakeup work? Message-ID: <20091104173234.X35366@sola.nimnet.asn.au> In-Reply-To: <4AF1149C.2070408@rawbw.com> References: <20091104005002.6B49F1065714@hub.freebsd.org> <20091104143039.J35366@sola.nimnet.asn.au> <4AF1149C.2070408@rawbw.com>
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On Tue, 3 Nov 2009, Yuri wrote:
> Ian Smith wrote:
> > As Paul said, hibernation only works if the machine's BIOS supports it
> > (hw.acpi.s4bios = 1) AND you've already prepared a suitable disk area,
> > usually a separate slice (DOS partition) or as a file in a 'doze slice.
> >
> > To make even a vaguely informed guess as to whether hibernation and/or
> > acpiconf -s3 (suspend/resume) might work, we'd need to know:
> >
> > What version of FreeBSD on which architecture? (output of 'uname -a')
> >
> > What make and model of laptop? (someone may know if that one works)
> >
> > Whether it runs a single or multiple CPUs? (see /var/run/dmesg.boot)
> >
> > The output of 'sysctl hw.acpi' ?
> >
> > cheers, Ian
> >
>
> Here is this information:
> FreeBSD-8.0-RC2
i386 or amd64? It matters, which is why we ask for uname -a .. obscure
your hostname etc if needed. Some Atom models (230 and 330, I read)
have feature 'LM' and so can run amd64; others don't and must run i386.
> Laptop is Lenovo S10-2, single CPU, Intel Atom.
But with hyperthreading enabled or not? How many CPUs launched (dmesg)?
Again, it matters. As I understand it, on 8.0 amd64 SMP suspend/resume
(S3) should work, i386 SMP is currently broken, i386 non-SMP should
(still) work, but I'm really not sure about the Atoms.
head -50 /var/run/dmesg.boot (or so) should clear this up. We don't
need the whole thing, but show anything to do with ACPI and CPU(s).
> --- sysctl hw.acpi output ---
>
> 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: NONE
> hw.acpi.suspend_state: S3
> hw.acpi.sleep_delay: 1
> hw.acpi.s4bios: 0
So, hibernate won't work. There was talk of someone doing that for a
Google SoC project but I've heard no more about it for a long while.
> hw.acpi.verbose: 0
> hw.acpi.disable_on_reboot: 0
> hw.acpi.handle_reboot: 0
> hw.acpi.reset_video: 0
> hw.acpi.thermal.min_runtime: 0
> hw.acpi.thermal.polling_rate: 10
> hw.acpi.thermal.user_override: 0
> hw.acpi.thermal.tz0.temperature: 43.0C
> hw.acpi.thermal.tz0.active: -1
> hw.acpi.thermal.tz0.passive_cooling: 0
Slightly surprising, but again I know nothing about Atom BIOSes.
> hw.acpi.thermal.tz0.thermal_flags: 0
> hw.acpi.thermal.tz0._PSV: -1
> hw.acpi.thermal.tz0._HOT: -1
> hw.acpi.thermal.tz0._CRT: 102.0C
> hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
> hw.acpi.thermal.tz0._TC1: -1
> hw.acpi.thermal.tz0._TC2: -1
> hw.acpi.thermal.tz0._TSP: 300
> hw.acpi.battery.life: -1
> hw.acpi.battery.time: -1
> hw.acpi.battery.state: 7
> hw.acpi.battery.units: 1
> hw.acpi.battery.info_expire: 5
> hw.acpi.acline: 1
> hw.acpi.cpu.cx_lowest: C1
If this is either i386 uniprocessor or amd64 SMP, suspend/resume should
work, though possibly needing some settings tweaked and/or some modules
unloaded/reloaded in /etc/rc.{suspend,resume} to do so successfully.
If so, I'd next try the freebsd-mobile@ list where several people who
should be able to advise on this tend to hang out. If not, you may be
out of luck at this stage.
cheers, Ian
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