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Date: Tue, 10 Jul 2007 01:52:07 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Stefano Rivoir <s.rivoir@gts.it>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux 2.6.22 released
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On Tue, 10 Jul 2007 09:17:18 +0200 Stefano Rivoir <s.rivoir@gts.it> wrote:

> Linus Torvalds wrote:
> > It's out there now (or at least in the process of mirroring out - if you 
> > don't see everything, give it a bit of time).
> 
> Hi all.
> 
> 2.6.22 hangs at boot on my box. Here attached a original dmesg from 
> 2.6.21, and a copy of it where it stops on 2.6.22 (I can't attach the 
> original 2.6.22 dmesg because it's not logged to disk yet); it actually 
> stops right after 'init' launches.
> 
> Thinking it was something related to USB mass storage, I've disabled 
> (not in the attached .config) it but with no results.

If you have another Linux box on the LAN, please set up netconsole
(Documentation/networking/netconsole.txt) to gather the boot logs.

When the machine has stalled, see if you can get a task trace with
ALT-SYSRQ-t.  This will require CONFIG_MAGIC_SYSRQ=y and possibly setting
ignore_loglevel on the kernel boot command line.

Thanks.

(mad guesses: try the following on the boot command line: clock=pit,
noacpi, noapic)