After replacing what I thought was *every single piece* of hardware in my box (a dual opteron server running FC2 2.6.5 and then 2.6.8) including the motherboard, memory, case/power supply, video card, etc. and plowing through a bunch of money yet still getting the same completely random lockups, I had pretty much given up. I noticed that turning off the X server seemed to prevent such lockups, so basically I could sleep at night knowing that as long as X was off, the server would still run.
Out of sheer dumb luck, my landlord kicked me out of my apartment and I had to find a new place to live. When I moved into my new apartment, my CRT monitor jiggled due to an unusually strong magnetic field, so I had to scrap it and get an LCD which has no vaccum tube to be affected by the magnetic field.
Lo and behold, I haven't had a lockup since. That was 60 days ago. I'd never gone more than 11 days without a lockup before. I did have lockups in the new apartment before the LCD came, so I know it wasn't the power (using UPS's anyway) or some other factor in the move. My conclusion is that one of two things was happening:
a) The monitor was sending some sort of voltage feedback back into the motherboard, causing the machine to lock (unlikely), OR
b) The module/code controlling the Samsung 955df CRT monitor was flawed (much more likely, I'd say). Once I plugged in the LCD and configured X to handle a "generic LCD" rather than the Samsung, I stopped having lockups.
There is an outside chance that one of my xorg package updates also corrected whatever problem might have been there. I'm not exactly sure. I do know that I tried upgrading xorg several times and it never helped before. I'm also disinclined to believe that due to the incredible coincidental timing of the last lockup, which occurred just a day or two before the new LCD was installed.
Hope this helps somebody else in the future.
Cyrus
Alexander Dalloz wrote:
Am Do, den 05.08.2004 schrieb Cyrus Adkisson um 17:46:
I did try apic=no as a boot option.... is it really "noapic" instead?
Cyrus
Yes, if you trust Alan Cox more:
http://www.fedorafaq.org/fc1/#AlanCox
Or even better the kernel documentation:
$ grep -n noapic /usr/src/linux-2.6.7-1.494.2.2/Documentation/* /usr/src/linux-2.6.7-1.494.2.2/Documentation/kernel-parameters.txt:704: noapic [SMP,APIC] Tells the kernel not to make use of any
Alexander
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