Helping debug system hangs

If your Chromebook appears hung (i.e. the screen is frozen and the keyboard and/or trackpad are unresponsive), try the following steps:
  1. Press Alt+VolumeUp+X. If you're using a Chromebox, use F10 instead of VolumeUp. These three keys need to be pressed in that order. This should cause the Chrome browser to restart, and it may take a few seconds.  If the system becomes responsive, go to step 5.
  2. If the system is still unresponsive, press Alt+VolumeUp+X again. This should cause the kernel to panic-reboot. If the system becomes responsive, go to step 5.
  3. Press Alt+VolumeUp+X again and the system should reboot. If so, go to step 5. (This may not work on older hardware.)
  4. If the system is still unresponsive, hold the power button for 8+ seconds and the system will power off.
  5. Boot the machine, log in, and immediately file feedback using Alt+Shift+i. Make sure that "Send system and app information" is checked.
If Alt+VolumeUp+X worked, you may also be able to see crash report IDs at chrome://crashes.
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