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Date: Mon, 10 Jun 2013 09:18:14 -0500
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Subject: ACPI Warning, then hang
From: Bryce Edwards <bryce@bryce.net>
To: freebsd-stable@freebsd.org
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I'm getting the following warning, and then the system locks:

ACPI Warning: Incorrect checksum in table [(bunch of spaces)] - 0x29,
should be 0x48

Here's a pic: http://db.tt/O6dxONzI

System is on a SuperMicro C7X58 motherboard that I just upgraded to
BIOS 2.0a, which I would like to stay on if possible.  I tried
adjusting all the ACPI related BIOS settings without success.

Bryce