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[Bug 1605007] Re: /usr/bin/compiz:11:ScaleScreen::getWindows:unity::UnityScreen::OnInitiateSpread:sigc::internal::signal_emit0:sigc::signal0:unity::PluginAdapter::NotifyCompizEvent

 

This bug was fixed in the package unity -
7.4.0+16.04.20160801.2-0ubuntu1

---------------
unity (7.4.0+16.04.20160801.2-0ubuntu1) xenial; urgency=medium

  [ Andrea Azzarone ]
  * FileManagerLauncherIcon: Don't trust the Quirk::VISIBLE in the ctor.
    (LP: #1599133)
  * [TrashLauncherIcon] Create GFileMonitor in an idle to avoid blocking
    calls. (LP: #1602720)
  * [LockSceen] Remove numlock warning. (LP: #1526322)
  * Make sure initiate and terminate callbacks are not empty before
    calling them. (LP: #1605012)
  * Properly destroy close_button_ to properly disconnect lambda. (LP:
    #1605010)
  * Use the standard notification-device-eject in the "device eject"
    notification. This allows us to scale it properly on high-dpi
    setups. (LP: #1605231)
  * Add tools to enforce unityshell plugin for the current profile and
    add "move" and "resize" plugins as requirements. (LP: #1506023, LP:
    #1605007, LP: #1604657)

  [ Marco Trevisan (Treviño) ]
  * Unity script: use result from unity_support_test to check the right
    COMPIZ_CONFIG_PROFILE to use (LP: #1602377)
  * LockScreenAcceleratorController: ensure callbacks are valid before
    calling them (LP: #1605012)

  [ Eleni Maria Stea ]
  * DecoratedWindow: Added shadows for shaped windows (LP: 1608418)

  [ Marco Trevisan (Treviño) ]
  * DecoratedWindow: Cleanup shadows for shaped windows, reduce
    recomputation (LP: #1608418)
  * UnityWindowView: don't try to deference close_button_ if its' null

 -- Marco Trevisan (Treviño) <mail@xxxxxxxxx>  Mon, 01 Aug 2016 13:10:28
+0000

** Changed in: unity (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1605007

Title:
  /usr/bin/compiz:11:ScaleScreen::getWindows:unity::UnityScreen::OnInitiateSpread:sigc::internal::signal_emit0:sigc::signal0:unity::PluginAdapter::NotifyCompizEvent

Status in unity package in Ubuntu:
  Fix Released
Status in unity source package in Xenial:
  Fix Released

Bug description:
  The Ubuntu Error Tracker has been receiving reports about a problem
  regarding unity.  This problem was most recently seen with version
  1:0.9.12.2+16.04.20160714-0ubuntu1, the problem page at
  https://errors.ubuntu.com/problem/07d63967ac9e4ad7a1f17990b115a433ed66408c
  contains more details.

  [Impact]

  Sometimes gsettings
  org.compiz.core:/org/compiz/profiles/unity/plugins/core/ active-
  plugins is not including scale, we need to ensure it's always there
  when loading unity session.

  [Test case]

  There's no easy way to reproduce the issue without some manual intervention.
  So one way is, set the unity active plugin list without scale:
    gsettings set org.compiz.core:/org/compiz/profiles/unity/plugins/core/ \
      active-plugins "['core', 'composite', 'opengl', 'compiztoolbox', 'vpswitch', \
      'snap', 'mousepoll', 'resize', 'place', 'move', 'wall', 'grid', 'regex', \
      'imgpng', 'session', 'gnomecompat', 'animation', 'fade', \
      'unitymtgrabhandles', 'workarounds', 'expo', 'ezoom', 'unityshell']"

  When restarting your session, the scale plugin should be there again
  (and thus doing Super+W should work, and so spreading multiple windows
  of an application).

  Also scale plugin should be correctly reloaded and listed in
    gsettings get org.compiz.core:/org/compiz/profiles/unity/plugins/core/

  Another way to reproduce is:
   1. Open two windows of the same application
   2. Launch the command above
   3. Click on launcher icon to trigger the application spread

  Unity should crash and immediately being reloaded. Now pressing the
  launcher icon should properly start the spread.

  [Regression Potential]

  Compiz load time might be increased, custom plugin list could be
  reverted to the default ones.

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