Can't poweroff with shutdown -p now

Matt Thyer matt.thyer at
Tue Dec 1 10:17:07 UTC 2009

2009/11/26 Robert Huff <roberthuff at>:
> Deniz writes:
>>  My thought is that it is related to ACPI. Same happens to me on
>>  my laptop.  Did you try it with acpi turned off?
>        Is there somwething going on with state-of-the-market machines
> that our ACPI doesn't account for?
>        The reason I ask: I recently build a new FreeBSD box using the
> ASRock AOD790GX.  Like the venerable (2001 vintage) machine it
> replaced, "shutdown -p" works fine.  However, with "shutdown -r" the
> shutdown part works but not the reboot.  (Otherwise a nice board.)
>        I'm willing to believe there's a BIOS setting that would fix
> this; I just wish I knew what it was.
>                                        Robert Huff
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I'm using an Acer Veriton T661 system at work and have noticed
unreliable "shutdown -p now" behavior too.
Sometimes the system will reboot instead of powering off, sometimes it
will not power off and sometimes it works fine.

I cant be sure if this started when I got that machine or when I
upgraded to the Xorg that requires dbus and hal as I got the machine
at the same time.

I'd just put it down to the Acer BIOS but I know that Ubuntu 9.04
x86_64 does not have this problem on the same machine.


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