title: Error "System UI isn't responding" while running AOSP build on emulator
body: <p>I am trying to run AOSP(oreo 8.1) build on emulator. </p>
  
  <p>I used following commands to build AOSP.</p>
  
  <pre><code>source build/envsetup.sh
  lunch aosp_arm-eng
  make -j4
  </code></pre>
  
  <p>my build was successful. Now i'm trying to run on emulator using following command.</p>
  
  <pre><code>emulator
  </code></pre>
  
  <p>emulator is started with following warning message.</p>
  
  <p><strong>Could not automatically detect an ADB binary. Some emulator functionality will not work until a custom path to ADB  is added in the extended settings page.</strong></p>
  
  <p>After successful boot "<strong>System UI isn't responding</strong>" message is displaying on the emulator, also emulator is running real slow.</p>
  
  <p>Any help in resolving this issue is greatly appreciated.</p>
  
  <p><a href="https://i.stack.imgur.com/U5Qpd.png" rel="nofollow noreferrer">emulator screenshot: system ui isn't responding</a></p>
  
  <pre><code>emulator: WARNING: system partition size adjusted to match image file (2050 MB &gt; 200 MB)
  emulator: WARNING: encryption is off
  main-loop: WARNING: I/O thread spun for 1000 iterations
  </code></pre>