Re: Catching NForce2 lockup with NMI watchdog - found?

From: Bob
Date: Sun Dec 07 2003 - 21:51:11 EST

Craig Bradney wrote:

On Sat, 2003-12-06 at 01:21, Prakash K. Cheemplavam wrote:

Craig Bradney wrote:

On Sat, 2003-12-06 at 00:49, Prakash K. Cheemplavam wrote:


*maybe* I found the bugger, at least I got APIC more stable (need to test whether oit is really stable, compiling kernel right now...):

It is a problem with CPU disconnect function. I tried various parameters in bios and turned cpu disconnect off, and tada, I could do several subsequent hdparms and machine is running! As CPU disconnect is a ACPI state, if I am not mistkaen, I think there is something broken in ACPI right now or in APIC and cpu disconnect triggers the bug.

Maybe now my windows environment is stable, as well. It was much more stable with cpu disconnect and apic, nevertheless seldomly locked up.

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

I have an Abit NF7-S Rev2.0 with Bios 2.0.


I rebooted and checked in my BIOS, I dont seem to have "CPU Disconnect"?
Is there another name. I also downloaded the motherboard manual for your
NF7-S and cant find it there either?

th efull name should be "CPU Disconnect Function". it is an the page with "enhanced pci performance", "enable system bios caching" ".. video bios caching" and all the spread spectrums. I have forgotten the name of that page in the main menu. Should the 3 or 4 in the first column.

Perhaps your BIOS is too old. I remember it only came with 1.8 (or alike) and later. But usually this setting should be disabled at default.

My machine still hasn't locked, btw. :-)

Sounds great.. maybe you have come across something. Yes, the CPU
Disconnect function arrived in your BIOS in revision of 2003/03/27
"6.Adds"CPU Disconnect Function" to adjust C1 disconnects. The Chipset
does not support C2 disconnect; thus, disable C2 function."

For me though.. Im on an ASUS A7N8X Deluxe v2 BIOS 1007. From what I can
see the CPU Disconnect isnt even in the Uber BIOS 1007 for this ASUS
that has been discussed.


I don't have that in MSI K7N2 MCP2-T near the
agp and fsb spread spectrum items or anywhere

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