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Date:      Wed, 9 Aug 2017 20:58:08 -0500
From:      Rajil Saraswat <rajil.s@gmail.com>
To:        freebsd-stable@freebsd.org
Subject:   Infrequent boot failure with 11.1
Message-ID:  <b0290484-9492-191f-0567-780a33873056@gmail.com>

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Hello,

I have a Supermicro X10Dri-T motherboard which refuses to boot 50% of
the time. It hangs with the message


DMAR: Found table at 0x7995ccb0
x2APIC should be disabled by DMAR table but already enabled by BIOS;
enabling.
Event timer "LAPIC" quality 600
ACPI APIC Table: <ALASKA A M I >
Package ID shift: 5
L3 cache ID shift: 5
L2 cache ID shift: 1
L1 cache ID shift: 1
Core ID shift: 1

I have tried setting X2APIC on and off in the BIOS but it hasnt helped.
I also custom compiled the kernel without the option EARLY_AP_STARTUP.

The full log is at https://pastebin.com/FUdUKaR2

Anybody has a idea what could be the issue?


Thanks




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