System hangs on restart on the Bq Aquaris 4.5

Bug #1445913 reported by Bernd Petersohn
32
This bug affects 7 people
Affects Status Importance Assigned to Milestone
ubuntu-touch-meta (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

It now happened the second time that I was not able to initiate a restart of the system on my Bq Aquaris 4.5. This happened after I pressed the power button for a few seconds and afterwards selected the restart option.

Other symptoms are:

- The white screen with the black bq logo does not appear.
- Instead, a pale violet background is permanently shown. Backlight of the display is on.
- The phone cannot be turned off by pressing the power button for longer.
- If the phone is connected to my desktop using an USB cable, the device is recognized but cannot be mounted.

Since the battery cannot be physically removed on that phone, the only option to solve the situation was for me to let it run
out of battery power until it turns off by itself. Afterwards, the phone can be put to live again after connecting the power cable.

It appears as if the phone is hanging in the boot loader. The problem may be more prevalent when battery power is already low (<50%) the time the restart is initiated.

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ubuntu-touch-meta (Ubuntu):
status: New → Confirmed
Revision history for this message
Trev Cobbett (nysosis) wrote :

My phone is currently experiencing the pale violet background issue, this was after restarting as a result of some irregularities in the behaviour of the phone (swiping from either side would open happen if you brought down the notification area from the top)

Revision history for this message
hurz (email4u) wrote :

Here the same,
after pressing the restart button, the phone is showing a pale violet background permanently.
The battery power is at least 75 %.
No possibility to do anything unless to wait until the battery is empty.

Bq Aquaris E4.5
Ubuntu 14.10 (r23)

Revision history for this message
adasiko (adasiko256) wrote :

 Press and hold "power" + "volume up" buttons for about 8 seconds

Revision history for this message
Bernd Petersohn (bernd-petersohn) wrote :

Yes, this works.

I recently tried that in a slightly different situation and recognized the textual boot menu that can be controlled with the volume buttons.

A moment ago I had again the restart problem as described above. Pressing power and volume-up for 8 seconds actually caused the phone to turn off. The boot menu appeared then after I turned on the phone again.

Thanks very much.

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