From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: 2.6.28: All I/O, D-state: 3ware 9650SE-16ML/Intel/965/MTRR/PAT?
Date: Sat, 31 Jan 2009 12:55:09 -0500
Message-ID: <20090131175509.GA24900@infradead.org>
References: <alpine.DEB.1.10.0901310523480.29879@p34.internal.lan> <alpine.DEB.1.10.0901311230510.4472@p34.internal.lan>
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To: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, linux-ide@vger.kernel.org, Alan Piszcz <ap@solarrain.com>, xfs@oss.sgi.com
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On Sat, Jan 31, 2009 at 12:37:39PM -0500, Justin Piszcz wrote:
> I think it was a coincidence when I tried to login before, I tried it  
> again (after trying to re-produce the problem, which I had been able to  
> do) and this time the mouse worked but the keyboard did not..even running
> echo b > sysrq-trigger did not reboot the server..  Had to resort to  
> manual method.
>
> I am now on kernel 2.6.28.2 and will see if I can make it happen again.

This looks like the bug fixed by commit
e8c82c2e23e3527e0c9dc195e432c16784d270fa.  Make sure you have it.