Ubuntu 16.0.1 LTS seems to be stuck at wallpaper screen.

[Ralf Mardorf]

On Tue, 2 Aug 2016 14:10:34 -0700, Jared Buck wrote:
>I seem to have a  major problem with the newest LTS version. I can
>boot to the log in screen fine and enter my password, but after that
>icons and the rest of the interface are either taking a long time to
>load or it is sort of frozen. The mouse pointer moves fine but nothing
>else is loading.

https://help.ubuntu.com/community/LinuxLogFiles

You could start with taking a look at

~/.xsession-errors
/var/log/lightdm/