If I'm running the Raspbian GUI desktop but haven't got a monitor connected, I'd like to be able to shut down with ctrl-alt-del.
With earlier versions of Raspbian, it was sufficient to change the shutdown option in /etc/inittab from -r to -h like so:
ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -h now
Raspbian has got cleverer, however, and ctrl-alt-del now pops up a task manager like other desktops. How do I disable that?