On Sat, Sep 17, 2011 at 8:12 PM, f5b <f5b...@gmail.com> wrote:
...
> 1\
> so the machine can shutdown using the power button (press the power
> button once).
> should sysctl.conf set default to "hw.allowpowerdown=1 " sync to
reality?
The commented out lines are intentionally *not* the defaults. The
idea is that you can just uncomment a line to get the effect that is
described in the second half of the line.
> 2\
> # sysctl hw.allowpowerdown=0
> sysctl: hw.allowpowerdown: Operation not permitted # this function
> can only be set when booting?
Well, let's check the docs!
man 3 sysctl
...
HW_ALLOWPOWERDOWN
Some machines generate an interrupt when the power button is
pressed and a driver can catch that interrupt. When this
variable is set, such an event will cause the system to perform
a
regular shutdown and power off the machine. When running with a
securelevel(7) greater than 0, this variable may not be changed.
Philip Guenther
