This bug was fixed in the package compiz -
1:0.9.9~daily12.12.05-0ubuntu1

---------------
compiz (1:0.9.9~daily12.12.05-0ubuntu1) raring; urgency=low

  [ Michael Terry ]
  * debian/control:
    - Update Vcs-Bzr
  * debian/patches/100_expo_layout.patch:
    - Fix to apply
  * Automatic snapshot from revision 3451 (bootstrap)
    - Fix crash from writing to static memory (LP: #1065814)
    - Fix maximized windows changing workspaces (LP: #1071791)
    - Respect Zoom Factor setting (LP: #1066187)
    - Respect Show Window Title setting (LP: #1009999)
    - Restore text background transparency (LP: #1042132)
    - Restore screenshot selection rectangle transparency (LP: #1047788)
    - Restore top and bottom cube transparency (LP: #1048272)
    - Fix scaleaddon window highlighting being solid (LP #1068503)
    - Make resize hint overlay disappear when changing edges (LP: #839602)
    - Preserve grid IDs during drag (LP: #1067812, LP: #1048855)
    - Save current display before doing snap preview (LP: #1068173)
    - Ignore inactive keybindings (LP: #1053280)
    - Handle <primary> in keyboard shortcuts (LP: #936840)
    - Make sure showdesktop plugin is loaded after unityshell (LP: #1067534)
    - Fix grid build failure (LP: #1067577)
    - Fix Jenkins test failures (LP: #1058577)
    - Don't allow duplicate static symbols when linking (LP: #1067964)
    - Make external templates C++0x compatible (LP: #1067598)
    - Make sure to initialize class members (LP: #1033877)
    - Don't duplicate templates in plugins (LP: #1066793, LP: #1066803,
      LP: #1066804, LP: #1066805, LP: #1066799, LP: #1066796,
      LP: #1066795, LP: #1066798, LP: #1067218, LP: #1067219)
    - Don't needlessly set gsettings keys (LP: #1064791)
    - Remove unused code (LP: #1037142, LP: #1067234)
    - Fix syntax highlighting for trunk xml files (LP: #1066823)
    - Fix documentation for building with python2 (LP: #1070211)

  [ Stephen M. Webb ]
  * Windows open below panel and launcher, grid does not work at all,
    window animations missing, and general plugin chaos if built on
    raring (cmake >= 2.8.10) (LP: #1085581)

  [ Iven Hsu ]
  * KDE Appmenu doesn't work with compiz decorators (LP: #1082265)
  * compiz 0.9.8.6 fails to build from source in KDE4-window-decorator
    with latest KDE 4.10 beta (LP: #1082152)
  * kde4-window-decorator crashes when starting up with oxygen theme
    (LP: #1050776)

  [ sampo555 ]
  * Grid: Window management - resize preview does not show when moving a
    window from the semi-maximised state to the maximised state in a
    single action (LP: #1071689)

  [ Timo Jyrinki ]
  * HTML5 video in Firefox continues to tear (LP: #1086337)

  [ MC Return ]
  * Workspacenames Plug-in: Wishlist: Default Appearance values not
    ideal (LP: #1075600)
  * Resizeinfo Plug-in: No possibility to change the color and
    transparency of the rounded background outline (LP: #1070297)
  * Resizeinfo Plug-in: Gradient color 2 and 3 settings are ignored and
    no background gradient is rendered (LP: #1070233)
  * Expo animations "Fade + Zoom" & "Vortex" result in a black screen
    (LP: #875311)
  * Workspacenames Plug-in: Wishlist: No default values for
    workspacenames, should be changed (LP: #1075584)

  [ Daniel d'Andrada ]
  * unity build fails if compiz is installed outside /usr (LP: #1084162)

  [ Daniel van Vugt ]
  * [regression] Window decorations ignore brightness/opacity changes in
    expo (LP: #1081425)
  * Unredirected fullscreen windows freeze and stay on top when wall
    sliding (Ctrl+Alt+Left/Right) (LP: #1084401)
  * Test failures:
    ExpoAnimationOffsetTest/ExpoWallOffsetTestAnimations.TestAnimationVa
    lues/21 (from ExpoAnimationOffsetTest_ExpoWallOffsetTestAnimations)
    (LP: #1071238)
  * Window management - Cursor position changes relative to window while
    dragging windows (LP: #201681)
  * Multi-monitor - Maximized windows cast shadows on adjacent monitors
    and workspaces (LP: #928807)
  * "Unredirect Fullscreen Windows" can cause significant tearing on
    fullscreen windows (especially playing video) (LP: #1051802)
  * 100_expo_layout.patch does not apply totally cleanly (LP: #1076876)
  * Tests 1-4 fail with SEGFAULT: CompizConfigPython.test_*
    (SEGFAULT)... (LP: #1080555)
  * Unredirect fullscreen windows should be the default for optimal
    performance (LP: #1063690)
  * lp:compiz r3447 FTBFS: compizconfig_test_ccs_object.cpp:123:9:
    error:        expression result unused [-Werror,-Wunused-value]
    GET_INTERFACE (Dummy2Interface, to);  (LP: #1075048)
  * [regression][GLES] obs opacity no longer applies to all window
    decorations (LP: #1028809)

  [ Andrea Azzarone ]
  * New windows are moved to front but don't take focus (LP: #781931)

  [ Sam Spilsbury ]
  * CompizConfigPython tests not using ini backend (LP: #1080989)
  * CMake Warning in src/tests/CMakeLists.txt:16 This command specifies
    the relative path (LP: #1082633)
  * CCSObjectDeathTest.GetInterface fails (LP: #1085687)
  * make test fails in CompizConfigPython.test_* (OTHER_FAULT)  (LP:
    #1070817)
  * It is possible to write to a plugin in compizconfig that has no
    associated gsettings schema (LP: #1078330)
  * CompizConfigPython tests not using ini backend (LP: #1077787)
  * When building with xorg-gtest, cmake fails to find xorg-gtest
    sources (LP: #1084096)
  * GLib warning - source still attached to context, but ref_count == 0
    on shutdown (LP: #1085590)
  * Can not find target to add properties to:
    compizconfig_gnome_gsettings_integrated_setting (LP: #1070411)
  * Fix LP: #1084796

  [ Automatic PS uploader ]
  * Automatic snapshot from revision 3502
 -- Automatic PS uploader <[email protected]>   Wed, 05 Dec 2012 
09:27:30 +0000

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

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https://bugs.launchpad.net/bugs/1067534

Title:
  "Show desktop" plug-in actually works with Unity when ensured that it
  is loaded after unityshell

Status in Compiz:
  Fix Committed
Status in Compiz 0.9.8 series:
  Won't Fix
Status in Compiz 0.9.9 series:
  Fix Committed
Status in Unity:
  Fix Committed
Status in Unity 6.0 series:
  Won't Fix
Status in “compiz” package in Ubuntu:
  Fix Released
Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  Problem:
  The default behaviour (before recent fixes) was loading this plug-in before 
unityshell, which prevented it from working correctly.
  Currently it is prohibited to start this plug-in together with Unity (either 
showdesktop or unityshell).

  Solution:
  We have to make sure that showdesktop is loaded after unityshell to allow the 
user to use it's functionality, namely sliding windows out of view to show the 
desktop and sliding them back in to restore the previous state.
  This effect is visually very pleasing and looks much better than Unity's 
standard fade out/in, so the fix should involve the possibility to enable this 
plug-in in CCSM together with Unity and to ensure that the plug-in is loaded 
after unityshell.

  The "Fade to Desktop" plug-in provides essentially the same functionality 
like already provided by unityshell (fade to desktop), the only difference is 
that you can adjust the fade time with it.
  Unfortunately this plug-in still makes some troubles, like a popping 
fade-out, so it will be best to not change current behaviour and prohibit the 
user using it together with Unity.

  [Test Case]

  Before the fix:

  Testcase 1:
  1. Open CCSM
  2. Enable "Show Desktop"
  Outcome: CCSM will tell you that the feature showdesktop is already provided 
by the plugin unityshell and prevents running them both
  3. Cancel to enable showdesktop, because it would stop unityshell

  Testcase 2:
  1. Open CCSM
  2. Enable "Fade to Desktop"
  CCSM will tell you that the feature showdesktop is already provided by the 
plugin unityshell and prevents running them both
  3. Cancel to enable fadedesktop, because it would stop unityshell

  Testcase 3 (without Unity):
  1. Open CCSM
  2. Disable unityshell
  3. Enable "Show Desktop"
  4. Enable "Fade to Desktop"
  CCSM will tell you that the feature showdesktop is already provided by the 
plugin showdesktop and prevents running them both
  5. Choose between showdesktop or fadedesktop

  After the fix:

  Testcase 1:
  1. Open CCSM
  2. Enable "Show Desktop"
  CCSM will accept your decision
  3. Test showdesktop: (Press Super+D) You will see the windows sliding out of 
screen if you want to show the desktop and sliding back in if you restore 
previous state (Press Super+D again)

  Testcase 2:
  1. Open CCSM
  2. Enable "Fade to Desktop"
  CCSM will tell you that the feature fadetodesktop is already provided by the 
plugin unityshell and prevents running them both
  3. Cancel to enable fadedesktop, because it would stop unityshell

  Testcase 3 (without Unity):
  Will be exactly the same like before the fix, see above (the desired behavior 
won't change) 

  
  [Regression Potential]

  There is no regression potential.
  The checks preventing the combined use of unityshell and showdesktop are new, 
so this just restores the same behavior like before the checks were introduced, 
with the only difference being that showdesktop now works for the first time 
together with Unity-3d, because it is ensured that the plug-in starts after 
unityshell.
  fadetodesktop and showdesktop are still not allowed to run together (case 
without unityshell), because they both provide the feature showdesktop.

  Ideally the fix for Compiz should go in first, then the one fixing
  Unity, but it will not produce any bugs if done the other way 'round
  either...

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