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Date:      Wed, 14 Jan 2015 13:55:41 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 196542] System stops booting with "ACPI APIC Table: <INTEL  DENLOW>"
Message-ID:  <bug-196542-8-3bScqt6RgD@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-196542-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-196542-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196542

--- Comment #6 from John Baldwin <jhb@FreeBSD.org> ---
Comment on attachment 151604
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=151604
Bootup with printf enabled

So it looks like it hung trying to start up the second AP?  Normally though we
have a timeout here that fails and prints a message (and offers to panic :-/)
if the AP doesn't respond in time.  In the past when I've seen similar issues
they have either been due to SMI# interference (we disable legacy USB mode on
certain Macs early in the boot process to workaround similar issues) or they
were resolved via a BIOS update.  Is this a new Intel platform?

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