--cycle-stages="-e -r max : -s"
The value of cycle-stages is a colon-delimited list of stages. The first one extends the desktop onto the external display using the maximum resolution available. And the second stage activates only the primary display. I also have a keyboard shortcut mapped to:
disper -C
which cycles through the stages defined in the config file. No more fiddling!
Get the PPA for disper here.
Get the PPA for disper here.