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To: Bernd Prager <bernd@prager.ws>
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernel config for AMD Athlon 64 X2 4200+ Manchester
From: Andi Kleen <andi@firstfloor.org>
References: <bb078b9bc5a6138dc7ac78609713efdd@prager.ws>
Date: Thu, 03 Jan 2008 18:51:37 +0100
In-Reply-To: <bb078b9bc5a6138dc7ac78609713efdd@prager.ws> (Bernd Prager's message of "Thu\, 3 Jan 2008 09\:05\:28 -0700")
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Bernd Prager <bernd@prager.ws> writes:
> $  cat /proc/cpuinfo 
> processor       : 0
> vendor_id       : AuthenticAMD
> cpu family      : 15
> model           : 43
> model name      : AMD Hammer Family processor - Model Unknown

This means your BIOS does not know your specific CPU. This could to all kinds
of subtle problems. Try to find a BIOS upgrade.

> Any ideas how I can configure the kernel to fix that?

The usual mistake is to not enable CONFIG_ACPI, although if the BIOS 
is really old and doesn't detect the dualcoreness of your CPU then that
might also not help.

-Andi