Ubuntu
linux package

  1. Bug #791089
  2. Comment #43

Comment 43 for bug 791089

Revision history for this message
John Mason (merc68k) wrote : Re: crash after rebooting or shutting down from Ubuntu 11.04

I've found the cause of this.

I looked at my loaded modules for anything nvidia-specific and the first hit was nv_tco.

Looked at the source for this module (http://lxr.free-electrons.com/source/drivers/watchdog/nv_tco.c) and it seems to handle some hardware watchdog timer for Nvidia chipsets (as I have on my P5N-D).

I disabled this module from loading, rebooted, and then rebooted again, and no more spontaneous reboots. I haven't tried any cold boots yet but I suspect that problem will be gone too.

I guess maybe I should file a bug against this module...