Console output stops - machine keeps on working

[Craig Boston]

On Sat, Jul 14, 2007 at 12:30:05AM +0200, Gelsema, P (Patrick) - FreeBSD wrote:
> I am running FreeBSD 7-Current-200706. Everything seems to be detected
> during boot and all goes ok until the moment the message that the fxp0
> link state changed to up. After that moment the console output stops. I
> cannot get to other tty;s or get output running again.
> 
> However the machine is responsive and I can log on by SSH remotely and do
> everything as if I were at the console. When I login by typing blind at
> the console and issue the reboot command or when I press the power off
> button on the workstation the console shows output again (not any use as
> it is then rebooting or powering off).
> 
> See http://www.superhero.nl/messages.txt for the message output during boot.
> 
> Anyone seen this kind of behaviour?

I've been seeing this intermittently on a relatively recent -current.
It seems to have started when I added KDB/DDB to the kernel config, but
I haven't disabled it yet to see for sure if that's the culprit.

Mine is an SMP (dual-core) system if it makes any difference.  It stops
right after a 'bge0: link up' message.

Craig