Ubuntu
unity-system-compositor package

screen comes on without interaction

Bug #1510250 reported by kevin gunn
22
This bug affects 3 people
Affects Status Importance Assigned to Milestone
Canonical System Image
Confirmed
High
kevin gunn
Canonical System Image backlog
powerd
New
High
Unassigned
unity-system-compositor (Ubuntu)
Confirmed
High
Alexandros Frantzis

Bug Description

Pat and I just discussing.
Pat has seen this on MX4, I've seen this very consistently on Nexus7.
I would say the Nexus7 screen would turn on by itself every couple of hours or so.

MX4 running rc-proposed r145, phone was plugged in and charging

See original description
kevin gunn (kgunn72)
Changed in canonical-devices-system-image:
importance: Undecided → Medium
Changed in powerd:
importance: Undecided → High
Changed in canonical-devices-system-image:
importance: Medium → High
Changed in unity-system-compositor (Ubuntu):
importance: Undecided → High
Changed in canonical-devices-system-image:
assignee: nobody → kevin gunn (kgunn72)
milestone: none → backlog
Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in unity-system-compositor (Ubuntu):
status: New → Confirmed
Pat McGowan (pat-mcgowan)
description: updated
Changed in canonical-devices-system-image:
status: New → Confirmed
Revision history for this message
Alexandros Frantzis (afrantzis) wrote :

I'll try to reproduce this locally using the upcoming USC version with more logging ([1]). Hopefully the USC logs along with the powerd logs will give us some more information about what is going on.

[1] https://code.launchpad.net/~afrantzis/unity-system-compositor/log/+merge/274550

Changed in unity-system-compositor (Ubuntu):
assignee: nobody → Alexandros Frantzis (afrantzis)
Revision history for this message
Alexandros Frantzis (afrantzis) wrote :

Also, two questions:

1. Do you remember if there are any apps running (perhaps in the background) when you see this?
2. Does the screen stay on forever after it turns on, or do they inactivity timeouts eventually turn the screen off again?

Revision history for this message
Pat McGowan (pat-mcgowan) wrote :

Sorry I do not recall what was running

i suspect I pushed the power button afterword, but noticed no always on behavior after that

Revision history for this message
kevin gunn (kgunn72) wrote :

I've witnessed this so often on the N7, i'm confident in saying - no running apps (just dash), b/c i often have just flashed the device, become distracted with other work, and left it sitting - and notice it light up.
It always autodims in ~1min, i suspect the inactivity timer.

Revision history for this message
Pat McGowan (pat-mcgowan) wrote :

I have seen this again yesterday and today, I only see it on arale and only when it was actively charging
In the last case the messaging app was the last active app, dialer and camera were also running
The phone does turn screen off on its on

I previously suspected the camera somehow but could not purposely reproduce it

Revision history for this message
Pat McGowan (pat-mcgowan) wrote :

It just came on at 13:27, end of syslog attached
plugged in charged to 45%
Settings app was last to be run
1.17 is the unity-system-compositor

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