Update:
I have tested this some more now and it seems like the delay from
pressing the power button until the screen comes on gets longer the
longer the time lapse since the phone was last booted.
Yesterday, I had the following experience:
* With the phone on and screen off, I pressed the power button and
waited...
* After more than 3 full minutes I gave up and pressed once more. The
screen flashed on for a second and switced off.
* Approximately 7-10s later I pressed the power button again. The
screen did not light up.
* This time I waited for 4 minutes before giving up and pressing the
button again. The screen flashed on for a second and switced off.
* Again, I waited a few seconds before pressing the button once more.
The screen remained dark.
* By now my patience was gone and I only waited 10-15s before pressing
the buttong again, causing the screen to flash on-off like before. I
then immediately pressed one more time and it came on.
* When trying to unlock the screen there was an awful lagging behavior.
* I decided to switch the phone completely off.
* I then restarted the phone. Once it was on, I switched off the
screen, waited a short while and pressed the button to switch it on.
This time it came on right away.
This is not the first time the phone has performed normally right after
switching it on (after switching completely off).
It is my impression than both the current bug as well as the tendency to
lag when swiping across the screen and when scrolling, manifest
themselves more the longer the time lapse since the last time the phone
was powered on.
I hope this helps to narrow down the cause. Good luck!
Best regards,
Ari
Den 26. okt. 2015 23:38, skrev Michael Terry:
> Thanks Ari, so that confirms that this is a delayed-screen-on bug, not a
> screen-never-comes-on bug.
>
> You mentioned the shutdown dialog appearing. That's bug 1508563, with a
> fix incoming.
>
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to powerd in Ubuntu.
https://bugs.launchpad.net/bugs/1429887
Title:
Sometimes need 3 power button presses to turn on screen
Status in Canonical System Image:
Incomplete
Status in Unity System Compositor:
New
Status in powerd package in Ubuntu:
Confirmed
Status in unity8 package in Ubuntu:
Confirmed
Bug description:
[filing here although may be other components]
Mako running 211 from rtm
I experienced these symptoms which have been previously mitigated in other
scenarios.
Last week while traveling and roaming this happened pretty much 100% of the
time.
This occurred in all areas (hotel, MWC, outside, etc)
Press power button, no response
Press button again, screen turns on for a few seconds then turns off
Press button again, either phone resumes or more often the power dialog is
shown
When I returned back home the function was normal without reboot or
other changes.
The differences in environment:
Roaming on foreign GSM network
Lots of Wifi APs not connected
Attached are some perhaps relevant logs, unfortunately the syslog
rolled.
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https://bugs.launchpad.net/canonical-devices-system-image/+bug/1429887/+subscriptions
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