From owner-freebsd-current@FreeBSD.ORG  Wed Oct  8 12:50:15 2003
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Date: Wed, 8 Oct 2003 12:50:23 -0700
From: Robert Ferguson <rob@fergusonlabs.com>
To: freebsd-current@freebsd.org
Message-ID: <20031008195023.GA683@asteroid.fergusonlabs.com>
References: <20031008104759.90B9816A4C2@hub.freebsd.org>
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Subject: RE: boot hang: "ata1: resetting devices .. done" (5.1-CURRENT, IBM
	T30)
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I see this problem as well. I'm running on a T40, with a DVD/CDRW in  
the ultrabay, and -CURRENT as of this morning. At boot, it hangs  
immediately after

ad0: 35174MB <IC25N040ATCS05-0> [71465/16/63] at ata0-master UDMA100
ata1: resetting devices ..
done

Backing out the most recent checkin to sys/dev/ata/ata-queue.c (i.e.  
reverting to version 1.6) makes the problem go away.

A verbose dmesg from the machine (with that change removed) can be  
found at http://www.fergusonlabs.com/t40/dmesg0.txt

Thanks,
Rob Ferguson