force into ok prompt

[TingChong]

Is there a way to force the sun box into ok prompt?
Pressing <Stop> <a> does not work.
The computer is hung.

[Grog]

In article <451a2a55.0308011350.2d3dfda1@posting.google.com >, ma7777772
@hotmail.com says...

> Is there a way to force the sun box into ok prompt?
> Pressing <Stop> <a> does not work.
> The computer is hung.

If STOP-A isn't working, and you can't get to a command line, then I
believe you must resort to turning the machine off and then on again.

Just cross your fingers and hope your filesystems don't turn to shit.

[Greg Andrews]

[email]ma7777772@hotmail.com[/email] (TingChong) writes:

>
>Is there a way to force the sun box into ok prompt?
>Pressing <Stop> <a> does not work.
>The computer is hung.
>

If the connector where your keyboard plugs into the Sun is
a round one, then try unplugging the keyboard and plugging
it back in again.

If the connector for your keyboard is a USB connector, then
you'll have to power the computer off.

-Greg
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[Lon Stowell]

Grog wrote:

> In article <451a2a55.0308011350.2d3dfda1@posting.google.com >, ma7777772
> @hotmail.com says...

>> Is there a way to force the sun box into ok prompt?
>> Pressing <Stop> <a> does not work.
>> The computer is hung.

>
> If STOP-A isn't working, and you can't get to a command line, then I
> believe you must resort to turning the machine off and then on again.
>
> Just cross your fingers and hope your filesystems don't turn to shit.

The alternate sequence may have been set: Tilde Control-B

If a local keyboard is normally attached, you might be
able to get an OK prompt by unplugging it then plugging
in again.

Otherwise, power cycle.

[Greg Andrews]

[email]lon.stowell@comcast.net[/email] writes:

>
> The alternate sequence may have been set: Tilde Control-B
>

That's "Return Tilde Control-B", but only on serial consoles,
not on Sun keyboards.

-Greg
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[Grog]

In article <x9CWa.31627$It4.19096@rwcrnsc51.ops.asp.att.net >,
[email]lon.stowell@comcast.net[/email] says...

> Grog wrote:
>

> > In article <451a2a55.0308011350.2d3dfda1@posting.google.com >, ma7777772
> > @hotmail.com says...

> >> Is there a way to force the sun box into ok prompt?
> >> Pressing <Stop> <a> does not work.
> >> The computer is hung.

> >
> > If STOP-A isn't working, and you can't get to a command line, then I
> > believe you must resort to turning the machine off and then on again.
> >
> > Just cross your fingers and hope your filesystems don't turn to shit.

>
>
> The alternate sequence may have been set: Tilde Control-B

Or the feature may have been disabled altogether.

> If a local keyboard is normally attached, you might be
> able to get an OK prompt by unplugging it then plugging
> in again.

Oh, yeah, I forgot about that. I rarely move keyboards around.

> Otherwise, power cycle.

[Chris Greenman]

TingChong wrote:

> Is there a way to force the sun box into ok prompt?
> Pressing <Stop> <a> does not work.
> The computer is hung.

If the box is hung and "stop a" doesn't work, you're screwed. Power cycle.
Removing the keyboard won't work because all it does is send a "break" to
the console which is what the "stop a" does.

Chris

[Greg Andrews]

Chris Greenman <chris.greenman@dfrc.nasa.gov> writes:

>TingChong wrote:
>

>> Is there a way to force the sun box into ok prompt?
>> Pressing <Stop> <a> does not work.
>> The computer is hung.

>
>If the box is hung and "stop a" doesn't work, you're screwed. Power cycle.
>Removing the keyboard won't work because all it does is send a "break" to
>the console which is what the "stop a" does.
>

No, that's not what Stop-A does. Stop-A sends the keydown and keyup
messages through the cable to the computer. Unplugging and re-plugging
the keyboard generates a break signal through the cable.

The keyboard port hardware handles the unplug/replug even very differently
than the press of the Stop and the A keys, so unplug/replug can work in
situations where keypresses don't.

-Greg
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