Comment 3 for bug 1173158

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Daniel Letzeisen (dtl131) wrote :

This is not a bug with Ubuntu or Unity. Raring/13.04 does not support the fglrx/Catalyst legacy driver. You are using a 3rd party PPA, and the fglrx-legacy driver is not installed correctly for the 3.8.x kernel, which breaks 3D aceeleration, and thus, Unity.