Graphic issues with Unity in Ubuntu 16.04

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Symptoms

Cause

The list of active Unity plugins is corrupted.

Resolution

  1. Log in to Ubuntu GUI where you experience issues
  2. Switch to text terminal by pressing Ctrl+Alt+F2 (or Ctrl+Alt+Fn+F2), log in
  3. Execute the following commands:

    # export DISPLAY=:0
    
    # gnome-terminal
    
  4. Switch back to Unity GUI by pressing Ctrl+Alt+F7 (or Ctrl+Alt+Fn+F7)
  5. Copy-paste and execute these commands:

    # killall -9 prlcc
    
    # sudo rm /usr/lib/compiz/libprlcompiz_0_9_12_2.so
    
    # gsettings set org.compiz.core:/org/compiz/profiles/unity/plugins/core/ active-plugins "['core', 'ccp', 'composite', 'opengl', 'place', 'snap', 'imgpng', 'resize', 'commands', 'compiztoolbox', 'move', 'mousepoll', 'grid', 'wall', 'vpswitch', 'unitymtgrabhandles', 'regex', 'copytex', 'session', 'animation', 'workarounds', 'expo', 'fade', 'scale', 'ezoom', 'unityshell']"
    
    # reboot
    

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