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When I want to shutdown my PC I click the top right corner and then press the power button after which a dialog pops up with the options: power off, restart, cancel.

Normally this pop up shows up right away. But since a week or so it takes about 30 seconds. During that time I can move my mouse but I can't open applications or do anything else.

When I cancel and try it again, it does open right away.

I didn't change settings or install weird stuff, only some updates of my icon theme. (I apparently had installed the Caffeine extension).

What could be the cause? And how can I diagnose this issue and see what it taking so long?

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  • 1
    Do you have Caffeine extension enabled?
    – pomsky
    Commented Feb 13, 2018 at 9:45
  • 1
    I do have installed that
    – Tristan
    Commented Feb 13, 2018 at 9:45

1 Answer 1

Reset to default
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There is a known bug in the Caffeine extension which causes GNOME shell to temporarily stop responding on first power button event. Disabling the extension should get rid of the issue.

As a replacement you may use another extension called Keep Awake! which provides similar (but with fewer options) functionality or wait (or hope) for the Caffeine extension to get updated with a fix.

Alternatively you may install the Caffeine application instead of the extension by running 

sudo apt install caffeine
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  • The keep awake extension did crash my gnome shell.
    – Tristan
    Commented Feb 13, 2018 at 9:53
  • @TristanT Works fine here (although in an Xorg session, not the default Wayland session), try rebooting/relogging-in after installing the extension.
    – pomsky
    Commented Feb 13, 2018 at 9:55

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