After upgrading to 18.04, I cannot launch terminal or nautilus from the favorites side bar. Xterm, however, is fine, and from there I can execute at least nautilus. Running gnome-terminal in the xterm window do nothing, except the warning "AT-SPI: Could not obtain desktop path or name"
Ctrl + Alt + T won't start the terminal, either. Nothing happens.
PS: I went from Ubuntu 16 through Ubuntu 17.10 without really using 17, perhaps I had the problems there, too.
Best Answer
I had same problem Include the Text Editor, file Manager (Nautilus) , Terminal,... not worked and also the sound after Login didn't work too.
After Upgrading OS , reinstall the Nautilus, .... witch is didn't help
Finally, by remove the "Google chrome remote desktop" is solved for me. By Command : sudo apt remove chrome-remote-desktop
Good luck