From mboxrd@z Thu Jan  1 00:00:00 1970
From: Len Brown <lenb@kernel.org>
Subject: Re: 2.6.25 pci=noacpi
Date: Thu, 1 May 2008 11:59:37 -0400
Message-ID: <200805011159.38059.lenb@kernel.org>
References: <20080425183807.366134771@ldl.fc.hp.com> <200805010110.40709.lenb@kernel.org> <48196CC5.6070704@gmail.com>
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To: Richard <tuxbox.guru@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-acpi@vger.kernel.org, Adam M Belay <abelay@mit.edu>, Li Shaohua <shaohua.li@intel.com>, Matthieu Castet <castet.matthieu@free.fr>, Thomas Renninger <trenn@suse.de>, Jaroslav Kysela <perex@perex.cz>

On Thursday 01 May 2008, Richard wrote:
> Len Brown wrote:
> > On Tuesday 29 April 2008, Richard wrote:
> >   
> >> Hi there,
> >>
> >> Now I am at a loss.. I cant get any logs from netconsole. With ACPI
> >> enabled it drops dead just after the kernel hands control to Init. When
> >> I reboot with acpi disabled there is no trace of the previous boot in
> >> /var/log/message or kernel logs.
> >>
> >> The network card I have is a Tigon3 and its not initialised before the
> >> system dies... or so it looks (altho I cant seem to get any netconsole
> >> working - I suspect pebkac)
> >>
> >> I have tried to find an option where the kernel boot is logged
> >> explicitly to disk, but I cant seem to find the option. There is so much
> >> chaff I cant seem to get my brain to find the REAL options list thats up
> >> to date.
> >>
> >> Any pointers are appreciated
> >>     
> >
> > go fishing with this bait:
> >
> > idle=poll
> > acpi=noirq
> >
> > -Len
> >
> >   
> Thanks :-) With help from Thomas (and his team) , noapictimer seems to
> have fixed the symptom.. now its to hunt for the cure :-)

if the problem is the apic timer stopping during C-states,
then you should find that idle=poll will also work around the problem.
If idle=poll does not work around it but noapictimer does, then
the problem is the apic timer when the system is non-idle.

-Len