[PLUG] SATA II, mdadm and soft power off

[Larry Brigman]

On 5/11/07, John Jason Jordan <johnxj at comcast.net> wrote:
....
> *Something* is sending a kill signal to the power supply, i.e., the
> soft power off is being triggered. I am assuming it is the same signal
> that the OS sends at the end after the user has clicked on the Shutdown
> icon. The mystery is what could be doing it. I wish I knew how the soft
> power off works.
>
> Any ideas and suggestions welcome, regardless of what wild hair spawned
> them.

There is no kill signal.

ATX Power supplies get a low voltage signal to power on.  If this goes
the other way
the power supply shuts down.  Also there is a Power OK line that must
be on after
a certain amount of time or the power supply shuts down.

There was a thread on the list that had the thermal shutdown setting
at a seriously
wrong level that was doing something similar and was a bear to troubleshoot.