@John
> Oh, is there a BIOS setting for the watchdog?
I'm not saying there is a BIOS option. I think the upon boot/restart, the BIOS 
is supposed to disable the tco watchdog/timer.

@Arkangyl
I'm no expert on this but if you search about nvidia (or intel) TCO timers, you 
will find this:

"timeout timer as part of the TCO feature in the CPU that will trigger a
reboot signal after the second timeout which could be caused by heat or
by any software lockup."

It seems it's a protection mechanism,  obviously, disable at your own
risk

To re-enable the module just remove it from the blacklist.
The easy and quick way I found to remove that module was to blacklist it. If 
you find a better one, let us know!

I'm trying to see how the watchdog can be configured. Maybe some config
option will prevent it from leaving the timer enabled after a reboot.

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https://bugs.launchpad.net/bugs/791089

Title:
  crash after rebooting or shutting down from Ubuntu 11.04

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