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I have an old Dell Pentium 2400 that I just did a clean install of Ubuntu 12.04 Server and I have discovered that it will sometimes freeze up. No keyboard input or ssh. I was looking at some other things online and some were things about graphics so I tried unplugging the monitor I had in but that still didn't work.

It happens randomly, sometimes 10 minutes, sometimes 30 minutes, but it never lasts more than an hour. What sort of things could cause this?

By the way I am running a Memtest as I write this

The syslog doesn't have anything before it crashes. Only information on startups

EDIT: I have tried adding nomodeset and acpi=off to the boot settings and the problem still persists

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thanks for posting, its probably your hardware. What did memcheck say? try replacing the memory. I doubt it has anything to do with Ubuntu. Good luck –  user166483 Mar 26 '13 at 17:40
    
So memtest passes on everything so I was confused. Today I made the crazy decision to try a different distro. I installed just plain old Debian and it has been running now for 2 and a half hours. Could it have been something with Ubuntu? –  adamk33n3r Mar 26 '13 at 21:27
    
So it has started doing it again. It ran for more than 12 hours but then it did end up eventually stopping –  adamk33n3r Mar 28 '13 at 1:27

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