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How to find or log Android phone reboot cause?

+1 vote
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For my project I need to know that - is there a way to log or capture the cause of android reboot, whether user manually powered off / rebooted the devices or wether system_server got restarted by adb kill or it was watchdog who restarted the device.

posted Jun 10, 2014 by Rameshwar

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2 Answers

+1 vote

For any Reboot or Shutdown or restart of system_server ShutdownThread is invoked, which contains reason for shutdown or reboot so you can get the reason from there and do anything with it, i.e. log it or write it to file etc.

see rebootReason and methods of ShutdownThread, for each reboot or shutdown run() method of ShutdownThread is internally invoked which internally calls rebootOrShutDown() method (which should not be called from anywhere else also).

answer Jun 10, 2014 by Meenal Mishra
0 votes

Logcat should get you through. So do the trace file and the tombstone file.

adb kill-server has nothing to do with it. If you kill something from the shell, it depends on the signal type.

You will find all "watchdog" related events in the log, and if you customize your own ROM, and want to ease the finding of those events, you can add a single line to the zygotte block of your init.rc

answer Jun 10, 2014 by anonymous
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