Hello i upgrade ubuntu 13.10 development branch and successfully installed ubuntu 14.04. but my problem is on user login screen.User login screen shows only gnome flashback option so how to get back ubuntu default. may be this is bug but how to get back ? Thanks in advance
If you have upgraded from Ubuntu 13.10 thn try following, might helps you.
Try to check whether ubuntu-desktop is installed or not !
If its not installed, Try to Install Ubuntu Desktop package
sudo apt-get install ubuntu-desktop
Hope this will helps you.