laptop doesn't power off

Tim Matthews tim.matthews7 at
Wed Aug 12 07:01:20 UTC 2009

On Tue, Aug 11, 2009 at 9:57 PM, b. f. <bf1783 at> wrote:

> On 8/11/09, Tim Matthews <tim.matthews7 at> wrote:
> > I have tried different combinations of a lot of things and powering off
> not
> > working, everything else working fine with no sign of acpi errors in
> logs.
> > acpiconf -s 1 (or any other number) operation not supported. I am now
> very
> > sure that my bios is up to date. Is there any thing that can be done to
> make
> > freebsd's acpi behave like linux's acpi?
> >
> Looking at , it appears that
> both Linux and FreeBSD use ACPICA.  So we could check to see if Linux
> has made any changes to their imported sources, and how they handle
> the power-down. From what you have told us, it appears that your
> machine is failing at some stage in calling three functions:
> AcpiEnterSleepStatePrep(ACPI_STATE_S5);
> AcpiEnterSleepState(ACPI_STATE_S5);
> We could specifically compare the handling of these three functions in
> FreeBSD and Linux, if you know that your computer works under Linux.
> If you want to enable debugging as I mentioned in a previous message
> (the one where you compile kernel and modules with ACPI_DEBUG, which
> can give us a lot more information than even hw.acpi.verbose=1), we
> can learn more about exactly where the problem occurs.
> There are a couple of other things you can try:  if you think that a
> certain piece of hardware is connected with the problem (again, we
> would know more if debugging was enabled), you can try:
> 1) physically removing the hardware;
> 2) going into the BIOS setup and disabling the hardware, if possible; or
> 3) disabling the ACPI subsystem that handles that hardware via
> /boot/loader.conf
> Also, have you tried FreeBSD 8 to see if that works for you?

I have just tried upgrading to current and powering off still didn't work. I
am not sure if I could get you any log files as my wifi, X and probably
other things no longer work.

> In the meantime, you can safely power down your machine by running
> 'shutdown -h now', and then manually cutting power.  A bit of a
> nuisance, but not the end of the world.
> b.

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