I'm using Qemu manager, and i got a similar error, I unchecked "disable acpi" and there was no crash, but froe at apple logo, try this in qemu manager and see if it works. (qemu manager is a gui for qemu)
1st off it is a full image (with all the machine files) and i can't get it to boot .
i get to something about "mDNSResponder" something.
This is starting to me off.
If i'm luck i get stuck at a "localhost:/ root#" prompt
Help me please!