screen comes on without interaction

[kevin gunn]

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

[Launchpad Janitor (janitor)]

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

[Alexandros Frantzis (afrantzis)]

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

[Alexandros Frantzis (afrantzis)]

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?

[Pat McGowan (pat-mcgowan)]

Sorry I do not recall what was running

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

[kevin gunn (kgunn72)]

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.

[Pat McGowan (pat-mcgowan)]

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

[Pat McGowan (pat-mcgowan)]

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