title: Cannot wake up Android emulator from sleep mode
body: <p>I need to test the behavior of my app in sleep mode. How to enable sleep mode, I found in this <a href="https://stackoverflow.com/questions/10476373/how-to-simulate-sleep-mode-on-android-emulator">Stackoverflow article</a>. As stated, about 1min after the screen of emulator goes to black.</p>
  
  <p>The problem is now, I cannot wake the emulator back up again. No clicking and not hotkeys (F7, CTRL+H, etc.) What do I do wrong. Or do I habe a misunderstanding with the sleep mode, in general.</p>
  
  <p>In principle, I could use a real device, but here I have not control when the phones goes to (deep) sleep, what makes it difficult to test.</p>