Really spooky

[Howard Lowndes]

Yes, my thoughts also that it is a mechanical problem in the switch box,
but that doesn't explain why a Ctrl-Alt-Del in the C position goes to box
C if it has not frozen, but goes to box D if box C has frozen.

-- 
Howard.
LANNet Computing Associates - Your Linux people
Contact detail at http://www.lannetlinux.com

On Thu, 6 Sep 2001, Sam Couter wrote:

> Howard Lowndes <lannet at lannet.com.au> wrote:
> > What is strange is that when box C freezes I can still switch to all of
> > the boxes, but when I switch to box C there is, not unreasonably, a blank
> > screen.  However if I do a Ctrl-Alt-Del in this position (box C) then it
> > causes box D to reboot.
>
> El cheapo switch box, which doesn't switch right when the keyboard
> controller on box C is frozen, or when box C doesn't output a video signal?
>
> > I first thought it might be cross talk in the switch box, but that doesn't
> > explain why it works OK when box C is working OK.  My only other idea is
> > that somehow the signal is migrating to box D over the DMZ network.
> > (After thought - there is a cron job which ssh's between these two boxes
> > regularly)
>
> Keyboard scancodes don't migrate across networks. If box D is rebooting,
> then either you've configured init on box C to cause it to ssh to box D and
> reboot it (unlikely), or you've really sent the Ctrl-Alt-Del sequence to box
> D. Since your switch box is in charge of that, I'd point the finger squarely
> at the switch box.
>