Re: [parisc-linux] Power LED

[Christoph Plattner <christoph.plattner@gmx.at>]

On the Apollo machine (720/50, 730, etc) the Power-Switch is NOT 
under software control. The switch is simple a "shortcut to ground"
and is a direct input line of the power supply unit (I know this,
because I have troubles with my power supply and studied the electrical
wirering, etc.).

On E55 I also think, that the switch is controlling the power supply
also, as I can switch off at any moment in Linux and HP-UX.

In the 712, the switch is definitly under software control, as the
software can simple ignore it ... and much more...

Bye
Christoph P.


Helge Deller wrote:
> 
> On Friday 15 February 2002 08:13, Christian Suder wrote:
> > On Fri, 15 Feb 2002 02:02:19 -0500
> > "James S" <smith-james@home.com> wrote:
> > > is it possible to hook the power button to the shutdown command like it
> > > is in hp-ux ?
> >
> > The LED and the powerswitch work as expected on my 712/80 at least since
> > the 0.9.3 ISO timeframe.
> 
> It depends.
> I know the power button works correctly on my c3000 and 715/64. Both
> systems shuts down the computer cleanly.
> But on another Apollo/50 machine (712/50 or 715/50 - I don't remember)
> pressing the power-button turns off the machine immediately. This is a bug
> and should be fixed if possible.
> 
> Helge
> 
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