And once Ubuntu is installed and you need to make that change permanent, edit /etc/default/grub by,
And type your desired parameter in between the quotes in this line.
gksudo gedit /etc/default/grub
Save and close that file and update Grub by,
But remember, the terminology of those commands is either acpi=off or noapic or nolapic. I haven't heard of noapci=off. Make sure you type the correct syntax there.