After I updated my 12.04.3 installation yesterday normal Unity didnt show up. It keeps falling back to Unity2D.
/usr/lib/nux/unity_support_test -p says my graphic card AMD Radeon HD 6700 Series is not supported but is used to work for over a year. It maybe that some recent changes to unity package broke something.
Update history: http://paste.ubuntu.com/6727763/
I have tried doing this:
sudo apt-get install --reinstall xserver-xorg-video-intel libgl1-mesa-glx libgl-mesa-dri xserver-xorg-core sudo dpkg-reconfigure xserver-xorg
But now LightDM ist even starting. How to repair it to usable state?