Date: Mon, 23 Jul 2012 15:49:37 -0600 From: Dan Allen <danallen46@airwired.net> To: List FreeBSD-STABLE Mailing <freebsd-stable@freebsd.org> Subject: local APIC error 0x40 Message-ID: <0974E59F-62DA-407A-99A7-6704A70D12C6@airwired.net>
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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=3D"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=3D"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=3D"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? Thanks, Dan Allen
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