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Date:      Mon, 17 Aug 2020 18:12:23 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 248707] Dell R630 - X2Apic enabled fails boot
Message-ID:  <bug-248707-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248707

            Bug ID: 248707
           Summary: Dell R630 - X2Apic enabled fails boot
           Product: Base System
           Version: 12.1-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: unspam@crystalforest.tf

Created attachment 217285
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=217285&action=edit
Error1

Processor: E5-2650L V3
No Raidcard installed
BIOS: UEFI Mode
Firmware: all up to date
Version FreeBSD 12.1

Issue:
When trying to install FreeBSD12.1 with X2APIC enabled in BIOS, the kernel gets
in a mess and hangs

With X2Apic turned off the OS boots just fine. However with X2APIC turned off I
loose Hyper Threading abilities.

I've tried the following tunables.

kern.cam.boot_delay="10000"
vfs.root_mount_always_wait=1

Neither work.

Misc:
Debian boots fine

OmniOS fails with: 
No SOF interrupts have been received this USB ehci host-controller is unusable

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