Subject: Re: NetSDF
To: Berndt Josef Wulf <email@example.com>
From: Herb Peyerl <firstname.lastname@example.org>
Date: 08/08/2001 09:42:02
Berndt Josef Wulf <email@example.com> wrote:
> is there any reason why NetBSD-alpha goes into debug mode whenever it
> looses connectivity to its serial console? I still haven't managed to
> get one of my graphics cards, e.g. Diamond S3 Trio 64 and hence
> still use the serial console. However, the kernel enters debug mode
"Doctor Doctor. It hurts when I do this."
I don't have an alpha, but this is the classic, age-old problem of
serial consoles. Sparcs have it too. Some people claim you can
make a dongle that pins dcd to dtr. I personally think it has to do
with wiggling the cable to disconnect it and you're sending a long null
on the RX pin which looks like a <break>...
Try unplugging the other end first. That might help too.
Can you disable ddb with 'sysctl -w ddb.fromconsole=0'?
Anyway, this is not an alpha specific problem.