[ptsenter]

Here is how you can catch boot sequence on your device using adb:

- issue command

adb logcat -c

to clear what's there.

- Without disconnecting the device from a computer turn it off.

- Turn it on.
Wait until it booted up completely.

- issue command

adb logcat -f /sdcard/mylogggg.txt

- issue command

adb pull /sdcard/mylogggg.txt

You can do it now while your device function properly and save.

If later on the device starts to behave strange you can pull a new log and compare. It might help to find a culprit.

Also, files of interest:

/tmp/start.log
/tmp/fix-perms.log