I was able to get shutdown to work correctly by booting with
'nomodeset'. It turns out I do not need acpi=force so this is all I need
in /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash noapic nomodeset"
and it works. (I still have the ctrl alt F1 problem though)
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I have the same bug, Ubuntu 12.04 running MacBook Pro Retina, installed
NVidia drivers (specifically CUDA 5 driver). This is my experience:
first a general observations: I have another bug which may be related to
this one: ctrl alt f1 only gives me black screen (but ctrl alt f7 gets
me back)
1. b