hard-lock with CPU spinning

Alexandre "Sunny" Kovalenko alex.kovalenko at verizon.net
Thu Jun 14 19:22:22 UTC 2007


On Thu, 2007-06-14 at 20:02 +0300, Giorgos Keramidas wrote:

> Unfortunately, I've only been able to reproduce this while X11 is
> running, so I can't enter the debugger.  I'll see if I can reproduce
> this on a desktop system with a serial console, because entering ddb
> on a laptop running X11 without a serial port is at best tricky :)

My laptop has built-in Firewire, so I might be confused, but I have
vague recollection that I was able to use Cardbus Firewire card for
console purposes on the one, I have owned before.

You would have to build

device                firewire        # FireWire bus code
device                dcons_crom
device                dcons

into the kernel -- attempt to load them as modules had DDB complaining
about the lack of suitable ports.

Again: it definitely works on my built-in Firewire, and I am pretty much
sure it used to work on the card. Unfortunately, I do not have cards
handy to check it right now.

-- 
Alexandre "Sunny" Kovalenko <alex.kovalenko at verizon.net>



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