Do you have anything in /var/log/messages /var/log/Xorg.0.log(.old) or /var/log/lightdm/x-*.log? the session log suggests the xserver is going away or something... does any non unity session work?
Do you have anything in /var/log/messages /var/log/ Xorg.0. log(.old) or /var/log/ lightdm/ x-*.log? the session log suggests the xserver is going away or something... does any non unity session work?