Date: Wed, 26 Oct 2005 21:56:32 +0200
From: Paolo Ornati <ornati@fastwebnet.it>
To: Dave Airlie <airlied@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [2.6.14-rc? on x86-64] Total machine freeze
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On Wed, 26 Oct 2005 20:20:44 +1000
Dave Airlie <airlied@gmail.com> wrote:

> > 2.6.14-rc[45] works fine here, usually. But sometimes (~2 times in a
> > week) I get an hard-freeze:
> >         Sys-RQ doesn't work
> >         machine doesn't reply to ping / ssh
> >         nothing in the logs
> >
> > Seems like it loops somewhere with interrupt disabled... but I don't
> > know.
> >
> Does it get into X and crash?, did it do it with 2.6.13?

I got every crash under X so far (but I run X all the time so I can't
tell if it is related to X or not).

The crash doesn't happen when X starts, it happens at RANDOM times,
without any particular workload. Now it's some days that I don't see
the crash (from when I updated to 2.6.14-rc5-gd475f3f4)... so five days
without crash. I'm waiting to see if it happens again.

The last kernel that crashed was 2.6.14-rc5-g93918e9a.

I don't remember to have seen this crash with 2.6.13... so I suppose
2.6.13 is OK.

> 
> Do you have any "ricer" X options turned on like AGPFastWrite..

No.

	$ grep "AGP Fast" /var/log/Xorg.0.log
	(II) RADEON(0): AGP Fast Write disabled by default

I have other issues with AGP Fast Write: if it is DISABLED in BIOS I
can enable it in Xorg config without problems. If it's enabled in BIOS
and I enable it in Xorg config I get this:
	when X starts the screen goes in SUSPEND mode and X eats all
	the CPU (I've seen this whith ssh). X is unkillable and I
	cannot debug it with gdb... only a reboot kills it! But this is
	another issue.

The current AGP Fast Write config is:
	- enabled in BIOS	(don't ask me why...)
	- disabled in xorg.conf

-- 
	Paolo Ornati
	Linux 2.6.14-rc5-gd475f3f4 on x86_64
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