Hot answers tagged sleep-wake
Yes, its called "closed clamshell" mode. In short, you'll need to attach your MBA to a mouse, a keyboard and power: https://support.apple.com/HT201834
Found the answer in this so question:how to find out the start time of last sleep Luckily the date I had in mind wasn't too long ago so I was able to use pmset -g log|grep -e " Sleep " -e " Wake "
Yes, I think keeping the power on here is the key. When I remove the magsafe from my MBP it automatically goes to sleep and turns off the external display. If you really want to keep it from sleeping even when you are not connected to an external power source, you can use InsomniaX or Caffeine.
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