Subject: Re: serial console problem
To: Kevin Sullivan <ksulliva@psc.edu>
From: Bill Studenmund <skippy@macro.stanford.edu>
List: port-i386
Date: 11/07/1997 14:41:25
On Fri, 7 Nov 1997, Kevin Sullivan wrote:
> On Fri, 07 Nov 1997 11:59:31 EST, Kevin Sullivan says
> >I've just put 1.3_ALPHA on a new Pentium; this machine is destined to be
> a
> >"random service" machine (ntp, samba, amanda, etc). I've configured the
> >bootblocks to use a serial console and am booting with a generic kernel.
> >I've found an odd problem, though; whenever I turn off the terminal
> (which
> >is on the console serial port) the machine hangs. The machine starts up
> >again when the terminal is turned back on (though sometimes it has been
> >thrown into ddb).
>
> Odd. I built a new (non-generic) kernel from today's sources and the
> problem seems to have vanished. The machine is now quite happy with a
> disconnected serial console. I'd still be interested in knowing *why* it
> happened before, though, if anyone has any insights :-)
Well, diff the config files. :-)
On many ports, sending a "break" will drop the machine into the debugger.
It's supposed to. :-)
I'm not sure why it wouldn't drop into the debugger, unless a floating
input triggered a lot of interrupts.
Take care,
Bill