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 last step.
  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 last step.
  3. Press Alt+VolumeUp+X again and the system should reboot. If so, go to last step. (This may not work on older hardware.)
  4. Press Alt+VolumeUp+R which should cause a warm reset & reboot. If so, go to last step. (This may not work on older hardware.)
  5. If the system is still unresponsive, hold the power button for 8+ seconds and the system will power off.
  6. 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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