Re: [HW PROBLEM] Intel I7 MCE. Erratum or not?

From: Arjan van de Ven
Date: Sun Dec 07 2008 - 17:12:27 EST

On Sun, 7 Dec 2008 22:55:10 +0100
"Giangiacomo Mariotti" <gg.mariotti@xxxxxxxxx> wrote:

> On Sun, Dec 7, 2008 at 4:25 AM, Robert Hancock <hancockr@xxxxxxx>
> wrote:
> >
> > If it only happened once then who knows, could be a cosmic ray or
> > something.. but if it happens again it sounds like you likely have
> > a bad CPU.
> >
> This same MCE happens every time I boot the kernel, but it
> never happens with kernel It appears every time at log time
> [ 301.7320xx](where the x represent the scale of the approximation).
> In the previous log it appeared at [ 301.732037], now it appeared at
> [ 301.732042]. It happens just once at that moment and then never
> more until I reboot. No MCE gets logged with kernel nor with
> Windows Vista 32bit, not even under very heavy load on memory and
> cpu(like 3d games or 3d mark vintage). Is this really an hardware
> problem? Why does it get logged only on kernel at that exact
> moment? Now I'm gonna compile kernel 2.6.28-rc7 and see if there it
> happens too. Any suggestion? It would be appreciated, because,
> depending on the final result, I may be forced to change the
> hardware(It's still guaranteed, but it'd mean some months without a
> pc).

which video driver are you using?
While your HW might be defective (MCE's tend to indicate that), if it's
software dependent it might also indicate that something, usually a
video driver, gets the system in a really bad state.
Also, make sure that you have MCE enabled in both kernels (I'm sure you
do, but it's one of those things worth double checking)

Arjan van de Ven Intel Open Source Technology Centre
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