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[Launchpad Bug Tracker <1598770@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package unity - 7.4.0+16.04.20160715-0ubuntu1

---------------
unity (7.4.0+16.04.20160715-0ubuntu1) xenial; urgency=medium

  [ Eleni Maria Stea ]
  * PanelView: Don't draw it if the geo doesn't intersect the monitor
    geo (as in ezoom)
  * speeds up the showdesktop plugin in lowgfx mode

  [ Andrea Azzarone ]
  * Add whitelist for auto-repated keys. (LP: #1586491)
  * Fix scale window activation if in show desktop mode. (LP: #1582056)
  * Order matters in the rendering. Draw launcher shadow after the
    background in all cases. (LP: #1586374)
  * Fallback to volume name if no other identifier is available. (LP:
    #1103593)
  * Do not trigger screensaver on session inactive. (LP: #1587507)
  * Use SwitcherController::SetDetail instead of detail=... (LP:
    #1587618)
  * UnitySettings: Add an option to enable/disable pam account checking.
    (LP: #1460649)
  * Lockscreen: Make sure warning and errors are properly shown to the
    user (LP: #1593696)
  * Add missing header to fix compilation error with -Duse_pch=OFF.
  * Filter out fullscreen window in show desktop mode. (LP: #1597706)
  * Make sure file manager icon is not removed when unpinned. (LP:
    #1578792)
  * Properly calculate the intersection geometry in PanelView::Draw.
    This is needed to properly call SyncGeometries and to avoid problems
    such as lp:1595698. (LP: #1595698)

  [ Alberto Milone ]
  * UnitySettings: Add dconf keys for disabling multitouch gestures (LP:
    #1589520)

  [ Marco Trevisan (Treviño) ]
  * LockScreenAcceleratorController: use key::Grabber to handle allowed
    bindings (LP: #1438754)
  * LockScreenAcceleratorController: check if a setting key is available
    instead of crashing
  * ApplicationLauncherIcon: ensure quirks are properly set on icon
    initialization
  * Views: Toggle animators durations based on low-gfx setting (LP:
    #1598770)
  * unity7.conf: use different compiz profile based on
    unity_support_test result (LP: #1598770)

 -- Marco Trevisan (Treviño) <mail@xxxxxxxxx>  Fri, 15 Jul 2016 10:14:41
+0000

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https://bugs.launchpad.net/bugs/1598770

Title:
  Unity in low-graphics mode has animations and unneeded redraws

Status in compiz package in Ubuntu:
  Fix Released
Status in nux package in Ubuntu:
  Fix Released
Status in unity package in Ubuntu:
  Fix Released
Status in unity-control-center package in Ubuntu:
  Fix Released
Status in compiz source package in Xenial:
  Fix Released
Status in nux source package in Xenial:
  Fix Released
Status in unity source package in Xenial:
  Fix Released
Status in unity-control-center source package in Xenial:
  Fix Released

Bug description:
  [Impact]

  When unity is in Low graphics mode (because of software rendering)
  there are still window animations and fade effects which we should get
  rid of.

  
  [Test case]

  This should apply naturally to a (virtual-)machine with no hardware
  acceleration or There are multiple ways to force low-gfx mode:

  1) Add an upstart job such as:

  cat << EOF > ~/.config/upstart/lowgfx.conf
  start on starting unity7

  pre-start script
    #initctl set-env --global UNITY_LOW_GFX_MODE=1
    initctl set-env --global LIBGL_ALWAYS_SOFTWARE=1
  end script
  EOF 

  
  2) Run unity with:
     COMPIZ_CONFIG_PROFILE=ubuntu-lowgfx

  On login unity should use opaque views (dash, switcher, launcher,
  shortcut-dialogs) with no fading and reduced effects. Windows should
  also use smaller shadows.

  
  [Regression potential]

  Some settings from unity-control-center couldn't be applied to normal
  profile. Low graphics mode might be used as normal one.

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