Hey there! I totally get the frustration when you can't find the logout option in Ubuntu 17.10's Wayland session—those missing buttons in the top-right menu can be really annoying. Here are a few reliable ways to log out without restarting your system:

1. Quick Keyboard Shortcut #

This is the fastest method for one-off logouts:

• Press Alt + F2 to open the GNOME run dialog.
• Type logout into the input box and hit Enter. Your session will immediately log out.

2. Terminal Commands #

If you're comfortable with the terminal, these commands work seamlessly:

• Open the terminal with Ctrl + Alt + T.
• To log out instantly without a confirmation prompt, run:

  gnome-session-quit --logout --no-prompt
  

• If you want a confirmation dialog before logging out (to avoid accidental exits), use:

  gnome-session-quit --logout
  

3. Permanent Fix: Add Logout Button to the Top Bar #

If you want the logout option to show up in your system menu permanently, use GNOME Tweaks:

• First, install GNOME Tweaks by running this in the terminal:

  sudo apt update && sudo apt install gnome-tweak-tool
  

• Launch GNOME Tweaks from your applications menu.
• Navigate to the Top Bar section.
• Check the box next to "Show logout option". The logout button will now appear alongside lock, restart, and shutdown in your top-right menu.

内容的提问来源于stack exchange，提问作者rubo77