ACPI hanging shutdown

[Tom McLaughlin]

On Thu, 2007-06-07 at 06:27 -0700, Jeremy Chadwick wrote:
> On Wed, Jun 06, 2007 at 11:50:00PM -0400, Tom McLaughlin wrote:
> > Sometime between the beginning of April and May 14(?) there appears to
> > have been a change in ACPI which is causing my IBM R51 to hang when
> > shutting down.  I see syslog exit and then nothing.  I need to do a hard
> > shutdown with the partitions still mounted for it to turn off.  I booted
> > without ACPI and the problem has gone away.  Successive updates have not
> > solved this.  Anyone know what could be causing this?  Thanks.
> 
> Have you checked and/or tried setting the following two sysctls?
> I believe the one you might want is hw.acpi.handle_reboot=1.
> 
> $ sysctl -a | grep 'acpi.*reboot'
> hw.acpi.disable_on_reboot: 0
> hw.acpi.handle_reboot: 0
> 

Setting hw.acpi.handle_reboot=1 and a reboot did the trick.  Thanks.
Curious what has changed to cause this.

tom

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