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Date: Wed, 20 Mar 2013 10:37:59 -0700
From: David Wolfskill <david@catwhisker.org>
To: Konstantin Belousov <kostikbel@gmail.com>
Subject: Re: Silent reboots in head @r248550 starting xdm with
 x11/nvidia-driver
Message-ID: <20130320173759.GK32811@albert.catwhisker.org>
References: <20130320160056.GG32811@albert.catwhisker.org>
 <20130320171340.GE3794@kib.kiev.ua>
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On Wed, Mar 20, 2013 at 07:13:41PM +0200, Konstantin Belousov wrote:
> ...
> Did you rebuild the nvidia driver after the update ?
> Do you have a core dump partition configured ?

(I note that I have, in the past, captured crash dumps from head running
on this machine with this configuration.)

> Try to set vfs.unmapped_buf_allowed=3D0 at the loader prompt and see
> does it change anything.

OK; I tried this, then booted without attempting to start X in any way.
I then logged in as root and verified that

	sysctl vfs.unmapped_buf_allowed

reported "0".

I then issued "kldload nvidia.ko" (and verified that it was loaded via
kldstat).

I then started xdm, and (as before), got an unclean reboot.  (So: no
difference in behavior as far as I can tell.)

Peace,
david
--=20
David H. Wolfskill				david@catwhisker.org
Taliban: Evil men with guns afraid of truth from a 14-year old girl.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.

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