Public bug reported:

I have a BQ E4.5 with updated ubuntu touch. Randomly the screen becomes
black and the power button don't seems to do nothing.

While in this "state" i can recive calls (the device rings and after that the 
notification led blinks) and change the volume level but the screen doesn't 
After a few hours, minutes... the sistem reboots and screen begin working fine 
as it was powered off.
I really NEED help on this, is unreliable and i can't use it.


(sorry for the bad english)

** Affects: ubuntu
     Importance: Undecided
         Status: New

** Tags: screen

** Package changed: system-image (Ubuntu) => ubuntu

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  Random black screen

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