This bug was fixed in the package unity-system-compositor -
0.0.2+14.04.20140116-0ubuntu1
---
unity-system-compositor (0.0.2+14.04.20140116-0ubuntu1) trusty; urgency=low
[ Michael Terry ]
* Force the screen to redraw after turning the display back on (LP:
#1255045). Also stop
** Changed in: mir
Status: Incomplete = Invalid
** Changed in: mir
Milestone: 0.1.3 = None
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Title:
screen does not turn on on maguro
This bug was fixed in the package unity-mir -
0.2+14.04.20131128.2-0ubuntu1
---
unity-mir (0.2+14.04.20131128.2-0ubuntu1) trusty; urgency=low
[ Gerry Boland ]
* Install ServerStatusListener to be notified of mir server start, pause
and resume. Use start notification to send
** Changed in: unity-mir
Status: Fix Committed = Fix Released
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Title:
screen does not turn on on maguro when pressing the power button
Fix committed into lp:unity-mir at revision 154, scheduled for release
in unity-mir, milestone phone-v1-freeze
** Changed in: unity-mir
Status: In Progress = Fix Committed
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** Changed in: mir (Ubuntu)
Assignee: (unassigned) = Kevin DuBois (kdub)
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Title:
screen does not turn on on maguro when pressing the power
I'm investigating from the mir side, this might be something in the
power system too. The branch Daniel mentioned may help but the branch
was only meant to address a TODO. I'm working to confirm that it helps
or not
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The maguro driver does not provide an enableScreen() function hook at
all, so mir skips calling into the driver during a power request. The
lp:~kdub/mir/fb-device-enablescreen will not fix the problem in this
bug. The power button was working before, so I'm curious how... will
keep digging
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https://android.googlesource.com/platform/hardware/ti/omap4xxx/+/android-cts-4.4_r1/hwc/hwc.c
line 1961 might have a clue... seems both levers mir can push are just null
hooks
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Its strange that tapping the screen after the power button will turn it
on, input logic is far away from mir's android display system. Perhaps a
compositor update isn't being triggered, or the interplay between unity-
mir and powerd has changed subtly.
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Have people misinterpreted a black screen as the screen (backlight)
being off? They're two very different things.
Maybe the screen is coming on immediately but needs to be told to flip a
new frame?
Look very carefully, even from an angle, and you can tell when the
backlight is on but the image
** Branch linked: lp:~kdub/mir/fb-device-enablescreen
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Title:
screen does not turn on on maguro when pressing the power button
To manage
I've failed to notice any activity on the screen before touching it.
It's very difficult on maguro to discern between off and black.
When pressing the button, syslog reports:
Nov 28 02:17:27 ubuntu-phablet kernel: [ 987.062652] request_suspend_state:
wakeup (3-0) at 987055328372 (2013-11-28
I've failed to notice any activity on the screen before touching it.
It's very difficult on maguro to discern between off and black.
Scratch that. Looking closely at the boundary between the bezel and the
screen I can see it coming on, just displaying black. Man it's difficult
to see... AMOLED
Cool. Sounds like a simple problem then, of Mir just failing to schedule
a compositor frame on wakeup.
Normally frames are scheduled only when a surface changes. When no
surface is changing, no frames are scheduled, resulting in better power
management. So the touch is what triggers some surface
OK, it turns out Mir does correctly render a frame (or three!)
immediately as soon as the compositor is restarted. The problem then is
in unity-mir failing to stop/restart the compositor.
unity-mir assumes that turning the screen on is enough. Actually, it
appears to not be enough. You have to
Although in the multi-monitor case, the current design does not force a
redraw when you turn a single monitor back on. In that case you could
see similar issues with screens remaining black (or out of date) even on
desktop.
** Changed in: mir
Status: Invalid = Triaged
** Changed in: mir
Mir Team:
Do you think we *should* give graphics::Display knowledge of the
compositor::Compositor and force a restart/frame-schedule every time an output
is turned on? Or should the existing division of responsibility remain and let
the shell control both separately?
** Changed in: mir
In summary, please fix unity-mir now (per comment #16).
It's unclear as to whether this should be done automatically by Mir in
future (comment #18).
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** Changed in: unity-mir
Assignee: (unassigned) = Daniel van Vugt (vanvugt)
** Changed in: unity-mir
Status: Confirmed = In Progress
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** Branch linked: lp:~vanvugt/unity-mir/fix-1255045
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Title:
screen does not turn on on maguro when pressing the power button
To manage
** Changed in: unity8 (Ubuntu)
Status: New = Confirmed
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Title:
screen does not turn on on maguro when pressing the power button
To
** Description changed:
when putting the phone to sleep by pressing power it will not wake up
the screen when pressing power again unless the screen gets touched.
this issue seems to be restricted to maguro ...
+
+ WORKAROUND (as per description):
+ - press power button
+ - touch the
Image 26 seems to be clean:
1. Waiting for the phone to sleep press the power button it wakes. Pass
2. Pressing the the power button to make it sleep then pressing the power
button again to wake it. Pass
3. Waiting for the phone to sleep leave the device for 10 minute+ then press
the power
since the issue clearly starts with r27 one of the above packages must
be at fault.
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Title:
screen does not turn on on maguro when pressing the
teh package diffs between image 26 and 27
http://people.canonical.com/~ogra/touch-image-stats/20131120.2.changes
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Title:
screen does not turn on
Image 27 is confirmed by Dave to have triggered the issue (and this one
has the Mir new release only with click apparmor update. It can't be
click apparmor related ;))
** Package changed: unity8 (Ubuntu) = mir (Ubuntu)
** Also affects: mir
Importance: Undecided
Status: New
** Changed
Image 27 is where the breakage seems to begin:
1. Waiting for the phone to sleep press the power button it wakes. Fail
2. Pressing the the power button to make it sleep then pressing the power
button again to wake it. Fail
3. Waiting for the phone to sleep leave the device for 10 minute+ then
** Tags added: r26
** Tags removed: r26
** Tags added: r27
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Title:
screen does not turn on on maguro when pressing the power button
To manage
** Description changed:
when putting the phone to sleep by pressing power it will not wake up
the screen when pressing power again unless the screen gets touched.
this issue seems to be restricted to maguro ...
WORKAROUND (as per description):
1. press power button
2. touch the
** Changed in: mir
Importance: High = Critical
** Changed in: mir (Ubuntu)
Importance: High = Critical
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Title:
screen does not turn on on
** Tags added: galaxynexus
** Tags added: pm
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Title:
screen does not turn on on maguro when pressing the power button
To manage notifications
This might help, but not sure: lp:~kdub/mir/fb-device-enablescreen
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Title:
screen does not turn on on maguro when pressing the power button
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