Re: Catching NForce2 lockup with NMI watchdog - found

From: Bob
Date: Sun Dec 07 2003 - 22:18:29 EST

Wasn't this formerly fixed by a kernel config
option to not detect cpu idle on amd cpu's?
I don't see that in 2.6

Julien Oster wrote:

cheuche+lkml@xxxxxxx writes:


So gals and guys, try disabling cpu disconnect in bios and see whether aopic now runs stable.

Yes that fix it. Well time will tell but I cannot make it crash with
hdparm -tT or cat /dev/hda so far. I'm dumping hda to /dev/null right
After testing to make it crash, I used athcool to reenable CPU
disconnect, and guess what, test after that just crashed the box.
You found the problem, congratulations.

Well, now I'm stunned.

With APIC and ACPI enabled, my machine isn't even able to boot
completely, it'll most certainly crash before the init scripts are

Now, I modified the init scripts to do "athcool off" as the first
thing at all (I don't have any "CPU disconnect" BIOS setting) and it
not only booted, but I even can't seem to make it crash using my
hdparm/grep/whatever tests...

I don't know if it's "rock solid" yet, but at least the difference is
huge. It really seems like that made the problem go away!


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