How can I restart my GUI (X window server) from command line without rebooting the system? Which process(es) do I need to kill and do they automatically restart?
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4 Answers
All you need to do is restart LightDM as root, like so:
sudo restart lightdm
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1You should probably mention that you should do this from a TTY (virtual terminal). Sep 16, 2016 at 17:19
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I was guessing from the level of detail of the question that Mr. Wolf knows his way around the terminal. :) Sep 16, 2016 at 18:15
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1I wasn't just referring to the "terminal", but oh well. (I said virtual for a reason. I mean the thing you get when you press ctrl+alt+f-key-of-your-choice). Sep 17, 2016 at 22:30
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Oh, I see. And what would the advantage be in this case? How would that work? Curious myself now. :) Sep 18, 2016 at 12:35
This worked for me:
sudo service lightdm restart
The worst is that noone mentioned that you must use alt+ctrl+F1 to F6 to switch to terminal. Login there as standard user. Restart x with sudo command and then press alt+ctrl+F7 to go back to GUI.
On Ubuntu 18.04, I do this executing next command:
sudo systemctl restart lightdm
