Comment 21 for bug 1400626

I upgraded my system to the utopic stack. Unfortunately, after cleaning old config files I rebooted to find that X couldn't be started. Essentially the symlink "/etc/X11/X" got deleted. I recreated it manually (reconfiguring xserver-xorg-lts-utopic also works).

I guess this is a known issue (bug #1132736). Any way to avoid this when upgrading HWE?

Timo, I saw you were affected by this on Precise. Same thing on Trusty for you?