Where is the power off button in Ubuntu 18.04 LTS ?
Solution 1
If you click on the top right corner, it will show you a drop-down menu.
In that place, the power button is placed.
It will open the menu with Cancel, Restart and Power Off:
Solution 2
I currently don't have 18.04 installed, but if you can't find it you can always use the terminal and type the command:
sudo shutdown -h 0
This is how I typically shutdown my laptop.
Solution 3
Sign In with Unity
To get the familiar interface to Ubuntu 16.04 LTS in Ubuntu 18.04 LTS you need to sign in using the Unity interface. Do this right on the Sign In screen:
click the "gear" to select the Unity Desktop Environment (DE).
Familiar look and feel
Now you will see the familiar "gear" on the top right of your screen where you can select "Lock Screen", "Log Out", "Suspend" and "Shutdown". If you press the power button you'll get your regular selector:
This video also shows how to activate the lock screen option which is disabled for some users.
Also of interest is some users are not getting a chance to select an action because system shuts down immediately: How to make Ubuntu 18.04 LTS ask for action when I press ACPI Power button/key on VirtualBox (now immediately shutdowns)?
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NeihPaine330
Updated on September 18, 2022Comments
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NeihPaine330 almost 2 years
Just updated from 16.04 LTS to 18.04 LTS. New version of Ubuntu doesn't contain any power off button in both lockscreen and homescreen, obviously. Adding some gnome extensions couldn't help me either.
Please help me out. Thank you, guys.
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ubfan1 about 6 yearsMaybe your Alt key is stuck. When on, that changes the power-off to a "pause". Click and Hold also changes the power-off to pause, but I don't see how that could be a stuck button.
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WinEunuuchs2Unix about 6 yearsOn your sign in, click the gear and pick the fifth desktop called Unity
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NeihPaine330 about 6 yearsThere's no option for shutdown tho.
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Organic Marble about 6 yearsI would edit this for you but I honestly don't know what 'despegable' is supposed to mean.
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NeihPaine330 about 6 yearsI have only setting button, restart-shape button, Lock button and Pause button instead of those screws button, Lock button and Power off button.
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NeihPaine330 about 6 yearsI just found out shut down icon when I search it. Don't know yet it works or not. But there's no button in menu from the right corner.
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ubfan1 about 6 yearsThe gear and choices under it may not be present at login if Nvidia drivers are installed.
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WinEunuuchs2Unix about 6 years@ubfan1 Thanks for the tip. I haven't got around to installing nVidia drivers on 18.04 testing yet but I'll check that out down the road.