Date: Tue, 24 Jul 2012 13:26:01 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Dan Allen <danallen46@airwired.net> Cc: List FreeBSD-STABLE Mailing <freebsd-stable@freebsd.org> Subject: Re: local APIC error 0x40 Message-ID: <20120724102601.GU2676@deviant.kiev.zoral.com.ua> In-Reply-To: <0974E59F-62DA-407A-99A7-6704A70D12C6@airwired.net> References: <0974E59F-62DA-407A-99A7-6704A70D12C6@airwired.net>
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[-- Attachment #1 --] On Mon, Jul 23, 2012 at 03:49:37PM -0600, Dan Allen wrote: > Running FreeBSD 8.3 -- and updating sources on a daily base and building everything -- I found a new APIC/ACPI problem introduced in the past week. > > I have a Toshiba Satellite U205 with an Intel Core Duo (not a Core 2). It used to work fine with both cores but then sometime in on the road to BSD 8.0 the machine began hanging. So I added to /boot/loader.conf > > hint.apic.0.disabled="1" > > and the machine only had one core but it went back to being reliable. > > The laptop sits idle a lot, so I also have in /etc/rc.conf > > performance_cx_lowest="LOW" > > and the fans stay off unless I am doing a build. Everything was good. > > I went away on a trip last week for five days, came home, did a csup to RELENG_8 and rebuilt the world, as usual, and now the fans are always running full! > > If I comment out hint.apic.0.disabled="1" from /boot/loader.conf and reboot, the results are a mixed bag: > > 1) I get my 2nd core back, and it no longer hangs! Hurray. > 2) The fans go back to usually being off and silent. Hurray! > 3) I get zillions of error messages streaming saying: > > CPU0: local APIC error 0x40 > CPU1: local APIC error 0x40 > > No good! > > > I am sitting at a prompt, no X-Windows, no apps running (other than the usual demons), and every few seconds I get another pair of these error messages. > > 4) The error appears benign other than flooding the console. Everything works, nothing hangs, I can build the OS and everything appears fine. > > So how do I get rid of these messages? What does error 0x40 mean? Does your system slows down with these messages ? 0x40 means that some code tried to send IPI with interrupt number from the range of assigned CPU faults. I believe that FreeBSD code never does that. Is there a BIOS upgrade for your machine ? [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlAOeDkACgkQC3+MBN1Mb4hS9gCfZymwlbYL5bvjLMXzP4n9HZXL DLMAmwQuXExVBs/3f0hNe8UmdMHv2YxG =hAtn -----END PGP SIGNATURE-----
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