kern/127486: [smp] [panic] early SMP panic ("AP #1 (PHY #1) failed!") on Dell Inspiron 530

John Hood jh at
Tue Dec 23 17:20:03 PST 2008

The following reply was made to PR kern/127486; it has been noted by GNATS.

From: John Hood <jh at>
To: "Philip M. Gollucci" <pgollucci at>
Cc: bug-followup at
Subject: Re: kern/127486: [smp] [panic] early SMP panic ("AP #1 (PHY #1) failed!")
 on Dell Inspiron 530
Date: Tue, 23 Dec 2008 19:53:26 -0500

 Philip M. Gollucci wrote:
 > Any news on this, I'm a ports committer and am seeing exactly the same 
 > thing though it fails to boot 100% of the time from the HD.
 > APCI comes into play too.. If I disable it, I get all the way down to 
 > the HD mount which always fails and I can't type at the where is your 
 > root mount device prompt.
 Are you disabling the APIC or ACPI?  APIC support is required for SMP, 
 so if you've disabled APIC, you'll not see the crash I reported.
 > If I leave it enabled, it panics as this PR describes.
 > This is with a 7.0-R boot only iso and installed over the network.
 > I'll give 8-current and 7-stable a whirl hopefully tonight.
 Sorry I didn't respond earlier...
 No, sorry, no actual progress on a fix.  I have discovered that on my 
 systems, it seems related to keyboard input as/after the loader 
 transfers to the kernel.  If I let the system autoboot, it's (usually) 
 fine.  If I break to the loader prompt and type "boot", the boot fails. 
   If I type "autoboot 2", the boot succeeds.  If I type "autoboot 2" and 
 bang on the keyboard for a few seconds, the boot fails.
 I'm guessing the BIOS or loader or early kernel code somehow gets 
 tripped by the key-up event on the return key, which comes in after the 
 kernel has started.  You might try some variations on this theme.

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