Lock screen does not require password to unlock

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When I hit the lock screen button, lightdm-gtk-greeter appears and prompt me for a password.



At this moment I can choose to press ctrl+alt+f7 to get access to my desktop without any password.



How to fix that?



Ubuntu 17.10
GNOME Shell 3.26.2









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    up vote
    0
    down vote

    favorite












    enter image description here



    When I hit the lock screen button, lightdm-gtk-greeter appears and prompt me for a password.



    At this moment I can choose to press ctrl+alt+f7 to get access to my desktop without any password.



    How to fix that?



    Ubuntu 17.10
    GNOME Shell 3.26.2









    share|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      enter image description here



      When I hit the lock screen button, lightdm-gtk-greeter appears and prompt me for a password.



      At this moment I can choose to press ctrl+alt+f7 to get access to my desktop without any password.



      How to fix that?



      Ubuntu 17.10
      GNOME Shell 3.26.2









      share|improve this question













      enter image description here



      When I hit the lock screen button, lightdm-gtk-greeter appears and prompt me for a password.



      At this moment I can choose to press ctrl+alt+f7 to get access to my desktop without any password.



      How to fix that?



      Ubuntu 17.10
      GNOME Shell 3.26.2






      password lightdm lock-screen






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Feb 25 at 7:20









      Ghilas BELHADJ

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