Exiting Xorg panics Core Duo laptop

[Ben Kaduk]

On 5/10/06, Eric Anderson <anderson at centtech.com> wrote:
> Ben Kaduk wrote:
> > On 5/9/06, Eric Anderson <anderson at centtech.com> wrote:
> >> I have a Core Duo system (2 2GHz CPUs), that continually locks up (I
> >> believe it panics) when exiting xorg with both CPU's enabled.  If I have:
> >>
> >> hint.apic.0.disabled="1"
> >>
> >> in device.hints, I only use one CPU, however it exits from xorg just
> >> fine.  When the system locks, I still have some keyboard control (num
> >> lock lights, etc), but I can't seem to do anything else.  I can't see
> >> the screen, it goes black during that time.  All my system
> >> configs/dmesg/etc are here:
> >>
> >> Booted with apic not disabled:
> >> http://www.googlebit.com/freebsd/200605090613/
> >>
> >> Booted with apic disabled:
> >> http://www.googlebit.com/freebsd/200605091117/
> >>
> >> How can I debug (or help debug) this?
> >>
> >> Eric
> >>
> >>
> >> --
> >> ------------------------------------------------------------------------
> >> Eric Anderson        Sr. Systems Administrator        Centaur Technology
> >> Anything that works is better than anything that doesn't.
> >> ------------------------------------------------------------------------
> >> _______________________________________________
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> >>
> >
> > Eric,
> >
> > Does your laptop by any chance have a serial or firewire port with
> > which to set up a remote console?
>
> It has both.  I can set up a serial console on it - what's the best way
> to do this?
>
>
> Eric
>
>
>
> --
> ------------------------------------------------------------------------
> Eric Anderson        Sr. Systems Administrator        Centaur Technology
> Anything that works is better than anything that doesn't.
> ------------------------------------------------------------------------
>

I am told that there are instructions in the handbook at
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-setup.html
but I personally have not gotten it to work (though I only tried when
my laptop was panic-ing on boot. . .)

If your freeze truly is a panic, the trace should show up on the
serial console and illuminate what is going wrong.

-Ben Kaduk