Comment 8 for bug 1378188

Johann [https://disqus.com/home/user/disqus_zcqy9N2LgM/] posted a fix on webupd8, that works for me:

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****SHADOW ON CSD FIX****

The problem is generated by an older intel driver (xserver-xorg-video-intel)

1. Add oibaf ppa: $ sudo add-apt-repository ppa:oibaf/graphics-drivers

2. Update: $ sudo apt-get update

3. Install-update driver: $ sudo apt-get install xserver-xorg-video-intel

4. REMOVE REPOSITORY, -DO NOT- UPDATE YOUR SYSTEM:

$ sudo add-apt-repository -r ppa:oibaf/graphics-drivers

Reboot and be happy.

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(If this make something it shouldnt you can ppa-purge: $ sudo ppa-purge ppa:oibaf/graphics-drivers)

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Source: http://www.webupd8.org/2014/10/how-to-install-gnome-314-in-ubuntu.html