kernel: Uhhuh. NMI received for unknown reason...

"Jóhann B. Guðmundsson" johannbg at hi.is
Mon Mar 10 18:51:06 UTC 2008


Alan Cox wrote:
> On Mon, Mar 10, 2008 at 04:48:50PM +0100, Christoph Höger wrote:
>   
>>> Why do you think it is a faulty driver? For me it seems that most
>>> obvious reason for triggering a NMI is a buggy hardware.
>>>       
>> I know that there are drivers that produce NMI faults. I never saw that
>> on linux, though.
>>     
>
> NMI is almost always indicating hardware problems and there are very few
> software ways to cause them on x86.
>
>   
But there are software ways....

When reporting hardware problems those reports need to be both accurate 
and specific
in which hardware parts are failing ( Faulty memory, faulty motherboard 
faulty hard drive etc.. )
So when the end user receives the report he knows which components needs 
to be replace/fixed..
and is not spending money in something that might not be broken/need fixing.

In my case I have always thought it was something regarding the 
Motherboard + DVD drive in the laptop..
Ever since I was trying to get better DVD playback, back in FC-5 and I 
received this report
for the first time ( Atleast something I fiddle with caused the error to 
appear :) ).
BTW I did end up with smoother DVD playback .

To make things worse this is an Dell Inspiron 6000 with the special 
burst into flames integration. ( Manage to remove the battery
in time, had the laptop in the freezer for 3 hours and then I could 
started it again thou my hard drive got fried and possibly something else)
That along with the great part of Dells engineering putting the air 
intake underneath the laptop ( HP engineers are this smart also :s , 
this actually
makes one wonder who stole the design from who.. ) which can cause the 
laptop to run hot! that might cause weird behavior in hardware,
is not ruling out that this is not an actually hardware problem..  Far 
from it actually :)

But what has always puzzle me was the fact that I don't get this report 
with every kernel, which suggest that
there might be something else causing these reports.

I have finally order an IBM/Lenovo T61p 2.6 Penryn fully spec from USA 
just waiting for it to be delivered to replace the Dell Inspiron 6000.

The Dell Inspiron 6000 machine will remain the reminder of it's life an 
FC rawhide testing machine...

Why did I order it from USA?
Prize.. ca $3000 in USA, ca $6000 in Iceland.
Only IBM/Lenovo products are this expensive in Iceland, you would get a 
similar Dell hardware spec.
laptop for around $3000 and they might even throw the burst into flames 
feature for free..

Why IBM/Lenovo Thinkpad?
 
In case I have the both the laptops running side by side I need A laptop 
that can handle it if the Dell
laptop decides to go Supernova...

Best regards.
               Johann B.
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