The comment in bug #10 worked for me BUT after rebooting X did not start.
Trying to run "startx" under root resulted in me getting X: cannot stat /etc/X11/X (No such file or directory), aborting.
This led me to see that /etc/X11/X did not exist on my newly-upgraded machine, but on my laptop /etc/X11/X was a symlink to /usr/bin/Xorg.
I then ran sudo ln -sf /usr/bin/Xorg /etc/X11/X and after rebooting (or restarting lightdm), my X server was back.
The comment in bug #10 worked for me BUT after rebooting X did not start.
Trying to run "startx" under root resulted in me getting
X: cannot stat /etc/X11/X (No such file or directory), aborting.
This led me to see that /etc/X11/X did not exist on my newly-upgraded machine, but on my laptop /etc/X11/X was a symlink to /usr/bin/Xorg.
I then ran sudo ln -sf /usr/bin/Xorg /etc/X11/X and after rebooting (or restarting lightdm), my X server was back.