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Bug 90345 - nomce explanation is wrong
nomce explanation is wrong
Product: Red Hat Linux
Classification: Retired
Component: rhl-ig-x86 (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Sandra Moore
Sandra Moore
Depends On:
  Show dependency treegraph
Reported: 2003-05-07 07:37 EDT by Alan Cox
Modified: 2014-08-04 18:23 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2003-05-08 10:05:39 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Alan Cox 2003-05-07 07:37:18 EDT
Description of problem:

The explanation for the use of "nomce" on compaq systems is wrong. The technical
is apparently "Compaq connected the external pin to the wrong value". I guess
the polite/end user summary is 

"Early Compaq pentium machines may need this option because they do not support
processor error checking correctly."

Also btw

"A few other laptops - notably those using the Radeon IGP chipset may need this
Comment 1 Sandra Moore 2003-05-08 10:05:39 EDT
Thanks again for the feedback. I've edited the nomce boot option to read as follows:

This command disables self-diagnosis checks performed on the CPU. The kernel
enables self-diagnosis on the CPU by default (called 'Machine Check Exception').
Early Compaq Pentium systems may need this option as they do not support
processor error checking correctly. A few other laptops, notably those using 
the Radeon IGP chipset, may also need this option.

This correction will appear in the next release of the documentation.


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