Time and date is not available any more on top bar after I upgraded Ubuntu from 17.10 to 18.04 LTS. Time&Date settings is not available in "Settings", and it's not available in gnome-tweak-tool either(there's no "Top bar" menu in tweak GUI):

screen shot

Anyone knows how to fix this?


It seems you've logged into a Unity session somehow. If that is not intended, you may want to login to a GNOME session (default in 18.04).

To do that when you boot your system and get to the GDM login screen you should find a cogwheel (⚙️) next to the sign in button. If you click on the cogwheel you should find an Ubuntu (and Ubuntu on Wayland) option. Select it and log in.

  • 2
    Yes, date&time shows up normally in middle of the top bar after logging in to "Ubuntu". Unity must have been the default session for some reason and I totally forgot to switch it to GNOME through the cogwheel. Thanks a lot for your answer. – yyingsun May 16 '18 at 1:29
  • It's the other way around for me: it works fine with Unity but with Gnome I had to install a third party software to display the date and time... – Anto Feb 4 '19 at 10:56

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