local APIC error 0x40

John Baldwin jhb at freebsd.org
Thu Aug 2 18:49:41 UTC 2012

On Wednesday, August 01, 2012 6:04:55 pm Dan Allen wrote:
> On Aug 1, 2012, at 10:06 AM, John Baldwin <jhb at freebsd.org> wrote:
> > Can you use a binary search on the date to narrow down which commit breaks 
> Sadly, I cannot.  I upgraded the machine to RELENG_9.  The powerd demon 
appears to control the fan okay now.  However I still must use the apic hint 
in loader.conf to turn off my 2nd core or else I get flooded with that "0x40" 
error message.
> Today running in 9.1 PRERELEASE I have a quiet fan, only one core, and I 
have got a "stray irc7" message a couple of times.  This is all on my Core Duo 
Toshiba Satellite U205.
> Meanwhile, on a Pentium 4 and a tiny Dell Mini 10 Inspiron with an Intel 
Atom chip, everything is fine with RELENG_9.  It is just this Toshiba, which 
ran perfectly for years with FreeBSD 6, 7, but things have declined with 8.0 
and later.

Hummm.  Can you get a verbose dmesg?

John Baldwin

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