Comment 48 for bug 119308

Jerry's first mod works for me so far:

Do sudo gedit /etc/modules. Add the following line, then save:
apm power_off=1

But the second mod causes a bios error after grub on loading (not the end of the world) but then I cannot see my laptop battery charging.

do sudo gedit /boot/grub/menu.lst (where the l is a lower case L). Find the line that start with "kernel" and add this onto the end, no carriage return, all on the same line which probably wraps over:
acpi=off apm=power_off

But so far great, with just altering the modules.

Cheers Jerry, an annoying bug patched.