** Branch linked: lp:ubuntu/utopic-proposed/media-hub
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https://bugs.launchpad.net/bugs/1368786
Title:
Screen doesn't blank - krillin #32
Status in Gallery
This bug was fixed in the package media-hub -
2.0.0+14.10.20140917-0ubuntu1
---
media-hub (2.0.0+14.10.20140917-0ubuntu1) utopic; urgency=low
[ Alberto Aguirre ]
* Fix wake lock state machine and subtle race conditions on wake lock
refcounts. (LP: #1368786)
-- Ubuntu daily
** Changed in: media-hub
Status: In Progress = Fix Released
** Changed in: unity-system-compositor
Status: In Progress = Fix Released
** Changed in: unity-system-compositor (Ubuntu)
Status: In Progress = Fix Released
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I could also reproduce the issue with media-player, except that in that
case, media player process always exits after you focus away from it, so
USC always releases any display on requests for that process.
It seems there are races in the media-hub display wakelock reference
counting code which
The main culprit is the media-hub state machine that handles media player state
transitions which acquires or releases display locks.
See https://code.launchpad.net/~albaguirre/media-hub/fix-1368786 for details.
** Changed in: media-hub
Status: Confirmed = In Progress
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** Changed in: media-hub
Importance: Undecided = Critical
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Title:
Screen doesn't blank - krillin #32
Status in
** Also affects: unity-system-compositor
Importance: Undecided
Status: New
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Title:
Screen doesn't blank -
It looks like there is a legitimate issue with the gallery app (media-
player seems to behave ok).
I did find a possible race in USC, that had to do with the handling for
when a process dies (which removes all display on requests) and a
queued up display on request, however that does not apply
** Changed in: unity8 (Ubuntu)
Importance: Undecided = Critical
** Changed in: unity-system-compositor (Ubuntu)
Importance: Undecided = Critical
** Tags added: rtm14 touch-2014-09-25
** Description changed:
+ rumor has it this does _not_ occur on n4, only krillin flo
+
I think this
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unity-system-compositor (Ubuntu)
Status: New = Confirmed
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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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I see this on r30
Screen does not dim either
I had recorded and played some videos
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Title:
Screen doesn't blank -
unity-system-compositor.log seems to have multiple requests that are not
removed
Warning: ignoring unrecognised arguments: --vt 1
GL_VENDOR = ARM
GL_RENDERER = Mali-400 MP
GL_VERSION = OpenGL ES 2.0
dm_connection_start
WARNING: QApplication was not created in the main() thread.
initialized
** Changed in: unity-system-compositor (Ubuntu)
Assignee: (unassigned) = Alberto Aguirre (albaguirre)
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Title:
I reproduced this by doing the following:
Play a video in gallery
After it completes, push the pause/play button a few times
back out of the page
The kepDisplayOn request stays active
** Also affects: gallery-app
Importance: Undecided
Status: New
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Thanks for the test case. I'll try that...
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Title:
Screen doesn't blank - krillin #32
Status in Gallery App:
New
** Changed in: unity-system-compositor (Ubuntu)
Status: Confirmed = In Progress
** Changed in: unity8 (Ubuntu)
Status: Confirmed = Invalid
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