[gentoo-user] Re: Overclocking CPU causes segmentation fault

[Nikos Chantziaras <realnc@gmail.com>]

On 22/01/13 09:41, Nilesh Govindrajan wrote:
> So I have this old E2180 processor and no money as of now to buy a new
> rig :P
> I'm trying to overclock my CPU using BIOS host clock control and
> everything is fine at 2.6 Ghz up to bootloader.
>
> Kernel segfaults. Any idea why? I'm running pf-kernel 3.7.2 and it
> doesn't work with vanilla kernel either.
>
> Intel MCE is disabled in kernel configuration.

When you raise the "host clock", which is the FSB, you are also raising 
the frequency of your RAM.  So make sure you select a lower FSB:DRAM 
ratio in your BIOS.  To begin with, set it to 1:1.

Also, if you only have the stock CPU cooler that came with it, you won't 
be able to actually get a stable overclock.  Your CPU's stock frequency 
is 2GHz.  Without a better cooler, you might get it to 2.2 or 2.3 maybe. 
  But 2.6?  That's pretty optimistic.  I don't think it'll work in the 
long run, unless you happen to have picked a good chip that can be 
overclocked without raising the VCore.

But first, solve the RAM problem by lowering the FSB:DRAM ratio.