Screen remains off / black after toggling automated brightness off

Bug #1603660 reported by Mikko Majander
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
powerd
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Bug Description

Hi,

I think there might be a defect related to power management. After installing update mentioned in this email (https://lists.launchpad.net/ubuntu-phone/msg21587.html) following occurred:
 * Phone booted up
 * I toggled the automatic brightness control off
 * Screen wen't black (or turned off, I'm not sure)
 * After forcing the phone to reboot by pressing the power-button, the screen is off when it prompts for the pin-code for SIM-card.
 * Based on the haptic feedback the device seems to be registering some input.
 * Every once in a while the screen is lit and I can see PIN-prompt for a second until the screen goes blank again.

The device is Meizu MX4. I do not remember, on what setting I had the manual brightness. Maybe all the way down because it's not very dim even on that setting. At least it wasn't.

Unfortunately I cannot get any more information (logs, etc.) since the phone is basically inaccessible now. The phone cannot be accessed over adb (another problem and as far as I understand, very typical one with this model) it's pretty much bricked even if the OS boots up.

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