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From: Vivek Khera <vivek@khera.org>
Date: Tue, 28 Feb 2006 10:36:31 -0500
To: NAKAJI Hiroyuki <nakaji@jp.freebsd.org>
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Subject: Re: FreeBSD 6.1-BETA2/FreeBSD 5.5-BETA2 Available
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On Feb 27, 2006, at 8:20 PM, NAKAJI Hiroyuki wrote:

> Disableing ACPI timer solved the problem. My Opteron box does not lock
> up. Thanks!
>

Please add a note to http://www.freebsd.org/cgi/query-pr.cgi?pr=91910  
with some details of your system, or file a new PR about it so that  
hopefully ACPI can get fixed.

BTW, you can permanently disable the timer by adding the debug line  
to /boot/loader.conf.

>>>>>> In <D6D006A1-8D7C-4AE7-93BE-C79B2E995EBF@khera.org>
>>>>>> 	Vivek Khera <vivek@khera.org> wrote:
>
>> I'm gonna take a wild guess at ACPI problems.  I have one system on
>> which I have to disable ACPI timer for anything >= 6.0-RELEASE.
>
>> To disable it, at the boot menu, select 6 to get a prompt, then type
>
>> set debug.acpi.disabled="timer"
>> boot
>
>> and see if it still locks up.
> -- 
> NAKAJI Hiroyuki