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Date:      Sat, 25 Sep 2004 11:08:55 -0700
From:      Nate Lawson <nate@root.org>
To:        David Syphers <dsyphers@u.washington.edu>
Cc:        freebsd-current@freebsd.org
Subject:   Re: 5.3-BETA5-i386-disc1 bootstrap failures
Message-ID:  <4155B437.5020806@root.org>
In-Reply-To: <200409240059.47087.dsyphers@u.washington.edu>
References:  <200409211736.i8LHajfK000463@mist.nodomain> <4150757E.60504@root.org> <200409211206.03632.dsyphers@u.washington.edu> <200409240059.47087.dsyphers@u.washington.edu>

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David Syphers wrote:
> On Tuesday 21 September 2004 12:06 pm, David Syphers wrote:
>>On Tuesday 21 September 2004 11:39 am, Nate Lawson wrote:
>>
>>>The "safe mode" from the daemon loader disables both acpi and apic so
>>>that's one easy way to do this.
>>
>>This is the same problem I reported yesterday (with the more generic
>>subject of "can't install 5.3-BETA5"). Booting in "safe mode" worked fine,
>>and got me to the installation screen.
> 
> The list has been quiet about this, so I assume it's a rare problem.

Actually, at least I need more info to even know where to begin.  How 
about dmesg for starters?

> But I've 
> got a couple questions about it. First, does anyone have any idea what's 
> actually wrong? My computer is running -CURRENT from August 3 fine. (I don't 
> have APIC in that kernel.) Anything having to do with ACPI is default. My 
> computer is some generic HP, not quite three years old. More info available 
> if it would help.
> 
> If the problem is known, will it be fixed in BETA6? RC1?

Try just disabling apic:
hint.apic.0.disable="1"

> I can get to the installation screen by booting in "safe mode." Is it okay to 
> install from there? In the kernel config file, it seems APIC is associated 
> with SMP. I'm running UP, so why would this have any affect on my system?

Newer machines have APIC support which gives faster interrupts.  But 
it's quite safe to run a UP or MP machine with apic disabled.  You just 
lose performance (or the extra processors).

-- 
Nate



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