I had 14.04 until two days ago. Finally decided to do release upgrade to 16.04 and here we go – I ended up with missing display environment when starting with systemd. Good thing is that using upstart everything works fine.
It was saying: error opening display
I suspect two things in my configuration:
- My video card and driver? I am using: GeForce GT 630 with NVIDIA Driver Version: 375.66 from the official nvidia web.
- I have installed Mac theme from here:
http://www.noobslab.com/2014/04/macbuntu-1404-pack-is-released.html
No matter what i do if I switch to anything different then lightdm – it never runs, not even with upstart. I tried with lightDM and gdm3 – no luck at all. lightdm at least brings me to command line login, the other freezes at ubuntu loading dots (dots are moving but that's all).
Last two days I spent a lot of time trying to make this work, with no success at all. Any help would be highly appreciated.
Thank you for your time reading this!
Best Answer
I am placing the answer here in case anyone has the same problem:
Finally resolved. I've noticed I always had read only file system after systemd startup. It turns out that my fstab primary disk UUID was somehow messed up - interesting upstart had no problem with this..nor I had any troubles before upgrading from 14.04. So I just replaced it with the correct UUID and now it works just fine.