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From: John Baldwin <jhb@freebsd.org>
To: Przemyslaw Frasunek <przemyslaw@frasunek.com>
Date: Fri, 15 Apr 2011 14:40:48 -0400
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	(bigwig.baldwin.cx); Fri, 15 Apr 2011 14:41:41 -0400 (EDT)
Cc: freebsd-stable@freebsd.org
Subject: Re: Missing serial port after enabling serial console in loader.conf
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On Friday, April 15, 2011 2:31:20 pm Przemyslaw Frasunek wrote:
> > Hmm, can you post the output of 'devinfo -vr' and a verbose dmesg at a 
URL?
> 
> Devinfo output is here: http://www.frasunek.com/tmp/devinfo.txt
> 
> I'll post verbose dmesg after next reboot, which is already scheduled on 
sunday
> morning.

    unknown pnpinfo _HID=PNP0501 _UID=1 at handle=\_SB_.PCI0.LPC0.UAR1
    sio0 pnpinfo _HID=PNP0501 _UID=2 at handle=\_SB_.PCI0.LPC0.UAR2
        Interrupt request lines:
            3
        I/O ports:
            0x2f8-0x2ff

Hmm, that unknown device is your COM1.  Do you have a copy of your current 
dmesg available?  I'm curious if sio0 failed to probe the UAR1 device and then 
later attached to UAR2.

-- 
John Baldwin