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Date:      Tue, 09 Oct 2007 10:18:50 +0200
From:      Kris Kennaway <kris@FreeBSD.org>
To:        =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@deepcore.dk>
Cc:        Dave Frantz <imperial_courier@yahoo.com>, Kip Macy <kip.macy@gmail.com>, freebsd-current@freebsd.org
Subject:   Re: FreeBSD 7.0-current Locks During Device Probe--Solved
Message-ID:  <470B396A.5030400@FreeBSD.org>
In-Reply-To: <470B1DB1.1030700@deepcore.dk>
References:  <48190.89022.qm@web53907.mail.re2.yahoo.com> <470B1DB1.1030700@deepcore.dk>

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Søren Schmidt wrote:
> Dave Frantz wrote:
>> I finally figured out what was causing FreeBSD 7.0-current to crash on 
>> my machine during the device probe. It turns out that if options 
>> CPUFREQ is compiled in, the system will not boot. However, it can be 
>> safely kldloaded in later.
>>
>> I'm not entirely sure why my system dislikes CPUFREQ, but I can live 
>> without it. If you guys have any questions or anything, just let me know.
> Thanks for the report!
> 
> I've had problems with cpufreq before, but that was when running gdm, it 
> would lock the system solid if loaded before gdm was started but worked 
> fine afterwards.

The only problems I had were to do with acpi throttling in conjunction 
with cpufreq, which would hang my dual core opteron.  Unfortunately I 
have forgotten the tunable to disable this but you should be able to 
google for it.  Disabling acpi would also do it with a sledgehammer on i386.

Kris



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