The original report for the browser was closed some time ago so I
suggest we need a new bug.
Per comment #27 this may be a new behavior with the new repowered in
ota13. (I added lp:1630986)
Per comment #25 I think this is actually functioning as intended, if an
app sets display on and is an
Bob, could you please attach /var/log/repowerd.log and /var/log/syslog
to this bug. It could help us debug this issue.
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Title:
Apps can keep
M10 tablet, OTA13
I had not seen this problem until I installed OTA13.
Now my screen never blanks.
I pretty much only use the web browser app.
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** Attachment added: "ubuntu-silo-installer.fboucault_0.1_armhf.click"
https://bugs.launchpad.net/ubuntu/+source/unity-system-compositor/+bug/1502145/+attachment/4588418/+files/ubuntu-silo-installer.fboucault_0.1_armhf.click
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It's very easy to reproduce now. Just run an app that requests the
screen to stay on, in my case ubuntu-silo-installer (click package
attached).
Steps to reproduce:
- launch the app
- press the power button to lock the phone/dim the screen
- now send a text message to the phone
Expected results
** Changed in: unity-system-compositor (Ubuntu)
Importance: Undecided => High
** Changed in: unity8 (Ubuntu)
Importance: Undecided => High
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still seeing this issue on krillin, and it's very easy to reproduce:
1) launch a few apps, system-settings, messaging-app, address book
2) put phone to sleep
3) send a text message to the phone or recv some other kind of notification
(gmail, telegram, etc)
Expected Results:
- phone screen turns
** Changed in: oxide/1.10
Status: Fix Committed => Fix Released
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Title:
Apps can keep screen lit permanently
To manage notifications
** Changed in: canonical-devices-system-image
Milestone: ww02-2016 => None
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Title:
Apps can keep screen lit permanently
To manage
** Changed in: canonical-devices-system-image
Milestone: None => backlog
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Title:
Apps can keep screen lit permanently
To manage
Per comment #17 this is not fully fixed
** Changed in: canonical-devices-system-image
Status: Fix Released => Confirmed
** Changed in: canonical-devices-system-image
Milestone: ww46-2015 => ww02-2016
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** No longer affects: webbrowser-app (Ubuntu)
** Changed in: canonical-devices-system-image
Importance: Critical => High
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Title:
Apps can
this just happened again to my krillin, rc-proposed, r181
sudo dbus-send --print-reply=literal --system --dest=org.freedesktop.DBus
/org/freedesktop/DBus org.freedesktop.DBus.GetConnectionUnixProcessID
string:":1.77"
reports unity8
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** Changed in: canonical-devices-system-image
Status: Fix Committed => Fix Released
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Title:
Apps can keep screen lit permanently
To
I have seen this (screen lit and never goes blank) in OTA-7, bq aquaris
4.5. I simply cancelled an alarm, and it happened. syslog attached,
** Attachment added: "syslog"
https://bugs.launchpad.net/ubuntu/+source/unity-system-compositor/+bug/1502145/+attachment/4513286/+files/syslog
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unity8 (Ubuntu)
Status: New => Confirmed
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Title:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qtmir (Ubuntu)
Status: New => Confirmed
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Title:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unity-system-compositor (Ubuntu)
Status: New => Confirmed
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** Changed in: canonical-devices-system-image
Milestone: ww02-2016 => ww46-2015
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Title:
Apps can keep screen lit permanently
To manage
** Changed in: canonical-devices-system-image
Status: Confirmed => Fix Committed
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Title:
Apps can keep screen lit permanently
To manage
** Changed in: oxide/1.10
Milestone: None => 1.10.4
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Title:
Apps can keep screen lit permanently
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** Changed in: canonical-devices-system-image
Milestone: ww46-2015 => ww02-2016
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Title:
Apps can keep screen lit permanently
To manage
** Changed in: canonical-devices-system-image
Assignee: David Barth (dbarth) => Michał Sawicz (saviq)
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Title:
Apps can keep screen lit
** Changed in: oxide
Status: In Progress => Fix Released
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Title:
Apps can keep screen lit permanently
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** Branch linked: lp:oxide
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Title:
Apps can keep screen lit permanently
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** Also affects: oxide/1.10
Importance: Undecided
Status: New
** Changed in: oxide/1.10
Assignee: (unassigned) => Olivier Tilloy (osomon)
** Changed in: oxide/1.10
Status: New => Fix Committed
** Changed in: oxide/1.10
Importance: Undecided => Critical
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** Branch linked: lp:oxide/1.10
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Title:
Apps can keep screen lit permanently
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I'm reopening the unity-system-compositor task, because the bug still
exists there. Even if oxide will lift the screen lock when unfocused,
who's to say other apps will behave well, too?
We need to make sure that only the foreground app can request a screen
lock, which means we need to refactor
** Changed in: oxide
Status: Confirmed => In Progress
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Title:
Apps can keep screen lit permanently
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** Branch linked: lp:~osomon/oxide/prevent-concurrent-power-save-blocks
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Title:
Apps can keep screen lit permanently
To manage notifications
** Changed in: unity-system-compositor (Ubuntu)
Status: Confirmed => Invalid
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Title:
Apps can keep screen lit permanently
To manage
Thanks for the detailed analysis Alexandros. I am able to reproduce the
issue reliably on my arale, looking into it.
Note that the fact that keepDisplayOn is requested twice is expected:
chromium instantiates one PowerSaveBlocker per stream, so for a video
with audio, that’s two streams, hence
I have instrumented oxide, and I’m seeing the following:
Start playback of video, two instances of PowerSaveBlocker (one for
video, one for audio) are created and request a lock:
[1015/20:INFO:oxide_power_save_blocker.cc(260)]
PowerSaveBlocker::PowerSaveBlocker() 0xb8d11938 : Playing video
I have found a way to deterministically reproduce the issue with
webbrowser-app. Perhaps there are other scenarios that are problematic,
but hopefully this will at least provide some hints. Below are the steps
and between them the USC logs I get for each step, which give some
insight into what is
Oxide (the web engine under webbrowser-app) is the one that issues a request to
prevent screen blanking when playing a video.
It has code to handle releasing the lock when the app goes into the background,
so unless the signal doesn’t reach oxide in time before the process is stopped,
the lock
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