Messages in this thread | | | Subject | Re: Dazed and Confused | From | Gregory Boyce <> | Date | 08 Dec 2002 10:22:38 -0500 |
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On Sun, 2002-12-08 at 06:59, Gilad Ben-Yossef wrote: > On Fri, 2002-12-06 at 16:55, Greg Boyce wrote: > > > I have an issue that I've been trying to track down for some time, and I > > was hoping that someone might be able to provide me with a definitive > > awnser. > > > > I work in a company with a large number of Linux machine deployed all > > around the country, and in some of the machines we've been seeing the > > following error: > > > > Uhhuh. NMI received. Dazed and confused, but trying to continue > > You probably have a hardware problem with your RAM chips > > I have had the exact same error happen a while back on a 2.2.x kernel. > It did not seem to hurt anything but it made the QA dept. go bonkers so > I've spent some time chasing it down and found out what caused it back > then - perhaps the same, or similar, applies to your setup as well: > > The machines in question were Intel ISP1100 1U servers and for various > non important reasons I have built the kernel which they were running > without APM support. Now these machines have 3 small non marked buttons > on their front - one is the power button, one is the reset button and > one was a suspend button. > > What I found out was that whenever anyone pressed the "suspend" button > (usually because they meant to press the power or reset buttons and > missed) the error in questions was logged. It seems that APM suspend is > implemented (at least on those machines) as an NMI, and if you compiled > the kernel sans APM support the NMI handling code simply did not grok > that specific NMI and thus reported said error, which was otherwise > harmless.
Most of these machines do have Intel motherboards. I don't recall seeing suspend buttons, but I'll take a look. Thanks!
-- Greg
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