Date: Tue, 28 Sep 2004 12:33:24 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Gene Heskett <gene.heskett@verizon.net>
Cc: linux-kernel@vger.kernel.org, Matt Heler <lkml@lpbproductions.com>
Subject: Re: 2.6.9-rc2-mm4
Message-ID: <20040928103324.GA21050@elte.hu>
References: <20040926181021.2e1b3fe4.akpm@osdl.org> <200409272142.35182.gene.heskett@verizon.net> <20040928070104.GA14836@elte.hu> <200409280626.50167.gene.heskett@verizon.net>
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* Gene Heskett <gene.heskett@verizon.net> wrote:

> >what i use is serial logging to another machine. A digital camera is
> >fine too, if the problem area is still visible on the screen.
> >(Netconsole is useful too for other type of hangs but it's not
> > active at such an early stage yet.)
> >
> > Ingo
> 
> Unforch, I don't have a spare seriel port Ingo.  One is running my x10 

fortunately with the patch applied your box works now (so does mine) so
the bug appears to be fixed.

early-bootup debugging was never easy, and breakage there doesnt happen
all that often. Hopefully this was the last one related to remove-BKL. 

(If such a early-bootup lockup happens in the future then you sure could
temporarily unplug the ups serial connection and use that as the serial
console - for the narrow and temporary purpose of debugging that
boot-time hang.)

	Ingo
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