I just updated to 16.04 from 14.04. Everything was fine. Just that there is nothing on desktop folder display in main screen. No icons, nothing. I cannot change wallpaper either. I have a few files in " Desktop " folder. None can be seen on Ubuntu's default Unity desktop.The system hangs once in a while as well. Could this be related ? Any solution ? Thanks.
try and use "Ctrl + Alt + T" and this should load up the terminal. And follow Fix 5 to this referenced link below. I would do some more research on this issue as there may be more underlying issues with your upgrade.
The link below is in reference to the x session and nvidia drivers. potentially fix 5 is just refreshing unity for you so may resolve this issue.
good luck
Problems after upgrading to 14.04 (only background and pointer after login)
