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Date:      Wed, 07 Jul 2004 15:19:35 -0400
From:      Joe Marcus Clarke <marcus@marcuscom.com>
To:        conrads@cox.net
Cc:        freebsd-gnome@freebsd.org
Subject:   Re: Any way to debug a hard lockup?
Message-ID:  <1089227975.854.57.camel@gyros>
In-Reply-To: <XFMail.20040707140331.conrads@cox.net>
References:  <XFMail.20040707140331.conrads@cox.net>

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On Wed, 2004-07-07 at 15:03, Conrad J. Sabatier wrote:
> For the last few days, my amd64 box (Athlon 64 3200+, 5.2-CURRENT,
> updating just about daily lately) has been locking up hard fairly
> often, and I have no clue as to why.
>=20
> Checking the logs after rebooting reveals nothing at all out of the
> ordinary.  The box just "seizes up" and that's that.  Only thing to do
> is a power-down and restart.
>=20
> Changing from SCHED_ULE to SCHED_4BSD appears to make no difference at
> all.
>=20
> My other box, an older (32-bit) Athlon, has been rock stable.  I've
> been keeping both machines updated simultaneously to exactly the same
> revisions, using as near-identical system settings as possible also,
> the main difference being I'm running X.org/GNOME on the amd64 box and
> no X on the i386 box.
>=20
> Any suggestions?  Instinct tells me it may be a problem with some of
> the ports I'm running (X.org/GNOME, hence the Cc:s), but how to verify?
> Sure, I could run without X a while and see how it goes, but that still
> won't help to isolate the problem, if it is, in fact, port-related.

You'll need to use a serial console and DDB to debug these problems.=20
See
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-set=
up.html on setting that up.  Once the machine breaks into the debugger, you=
'll be able to get a stack trace.

Joe

>=20
> Thanks.
--=20
PGP Key : http://www.marcuscom.com/pgp.asc



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