I am using Ubuntu 12.04.1 and I have just installed the official Nvidia driver. now every time I log in, any gnome based desktop replacement (like unity or cinnamon) doesn't start correctly. It displays the ugly gray bars. Cinnamon looks like this: desktop Unity looks like this: unity

Is there a way to reset the gnome settings or what else can I do? I have tried to uninstall and reinstall cinnamon, but the problem is still present.


Right click on your desktop --> Change Desktop Background --> Theme --> Ambiance. The white panel comes with the Radiance theme.

enter image description here

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I found the solution: OpenGl did not work correctly. So i found the soulution here: Switch from NVidia to internal Intel HD graphics - OpenGL does not work

I had to reinstall xorg / xserver ...

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