I want to have a hot corner that will immediately (and reliably) load my lock screen. Any suggestions?

  • xdotool can do this.. go through man xdotool
    – UnKNOWn
    Jun 5, 2019 at 14:46
  • @PRATAP Could you please expand it to an answer?
    – pomsky
    Jun 5, 2019 at 15:13

3 Answers 3


First you need to install a GNOME shell extension called CustomCorner to be able to activate hot-corners.

Then open the extension's preferences and choose a corner, and select 'Run Command'.
enter image description here

In the command box, use the following

dbus-send --type=method_call --dest=org.gnome.ScreenSaver /org/gnome/ScreenSaver org.gnome.ScreenSaver.Lock

Alternatively, you can use

gnome-screensaver-command --lock

if you have the gnome-screensaver package installed.


For what it is worth:

Super+L (Super is the Windows key on PC, or the command key on Macs) locks your screen.

I always have the screen blanker off, but it still activates as I press these keys.

System Settings > Brightness & Lock:

Turn screen off when inactive for: Never.

Lock: ON
Lock screen after: 30 seconds.

[v] Require my password when waking from suspend.

  • 27
    It says nothing about the hot corner part, the feature OP is looking for.
    – pomsky
    Jun 5, 2019 at 14:55
  • 5
    Yes? And how come this would not be still a valid answer? Maybe OP didn't know about this.
    – Hannu
    Jun 5, 2019 at 15:06
  • 4
    Thanks @Hannu - you are correct in that I did not know about this. Makes the hot corners no longer needed
    – Shamoon
    Jun 5, 2019 at 15:30
  • 21
    +1 for addressing the XY problem, though in spirit of SE perhaps the other answer should be the accepted one. Jun 5, 2019 at 22:52
  • 7
    -1 for not answering the question asked. Jun 6, 2019 at 15:22

For what it's worth:

In Kubuntu 18.04 (Ubuntu with the KDE 5 desktop), this is built in:

System Settings > Workspace - Desktop Behaviour > Screen Edges - each of the screen edges and corners can be set to various actions one of which is Lock screen.

  • 2
    This question is tagged as using Gnome, so I'm not sure why you answer this for KDE.
    – Mast
    Jun 7, 2019 at 11:07
  • 6
    @Mast Why does it matter? Someone else might stumble upon this post because of its similarity and find it useful. Jun 7, 2019 at 18:58

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