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I've set up Ubuntu 16.04.3 LTS to boot in CLI mode, and to start a GUI I run sudo lightdm start in tty1.

My question is, Is there any way to quit GUI completely and get back to CLI in GUI?

I can quit GUI by sudo lightdm stop in tty2 (since tty1 is running lightdm and I can't insert any command) or simply by CTRL + C. But it feels like an unusual way to me. And am I doing right to quit GUI?

Zanna
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cody
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  • You want to start your Ubuntu as a "server" i.e. without any GUI at all, is that right? – M. Dm. Jan 05 '18 at 14:28
  • sudo lightdm (start|stop) , no need to go to tty2 to start / stop. If you have a problem with startx , post the error message. FWIW on servers consider a web administration tool. – Panther Jan 05 '18 at 14:33
  • [Here](https://askubuntu.com/questions/16371/how-do-i-disable-x-at-boot-time-so-that-the-system-boots-in-text-mode) they tell you to boot in text mode. – Pierre François Jan 05 '18 at 14:41
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    For systemd-based systems, the preferred methods would probably be `sudo systemctl isolate multi-user.target` - and `sudo systemctl isolate graphical.target` instead of `sudo lightdm start` - these should be independent of the particular desktop manager. – steeldriver Jan 05 '18 at 16:39

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