> > >...and still doesn't come back from suspend now, either. :-/
> > >In fact, it reset hard enough that dmesg was completely cleared out
> > >(although that could be because MSGBUF is higher on my usual kernel.)
> > >	Manufacturer: Dell Inc.
> > >	Product Name: Inspiron 6000
> > 
> > Can you try again with the sysctl 'machdep.acpi_vbios_reset=0' set before 
> > you go to sleep? The display probably won't come back, but if the 
> > caps-lock key toggles an LED, that is a good sign :-) You should be able 
> > to blindly reboot it that way..
> 
> None of the LEDs blink, and the keyboard doesn't seem to work at all -
> but it does resume from suspend without immediately rebooting. This is
> probably a good sign. Here's the dmesg from your kernel.

But! If, as you suggested, I set a system password in the bios, that
brings the system back up into a usable state. Woo!