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[Bug 1598770] Re: Unity in low-graphics mode has animations and unneded redraws


** Description changed:

+ [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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  Unity in low-graphics mode has animations and unneded redraws

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