18.04 lock screen stopped working - screen freezesScreen does not lock when locking is enabledLock Screen BlankLock individual application's interface

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18.04 lock screen stopped working - screen freezes


Screen does not lock when locking is enabledLock Screen BlankLock individual application's interface






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;









4


















enter image description here



When I try to lock the screen it just freezes. It is not possible to log on again. It used to work perfectly and suddenly it does not. However, I am not aware of any recent updates or similar.



I would try to reinstall the component that is responsible for locking the screen. Which one would that be?










share|improve this question

























  • @PRATAP yes, but with the same buggy behavior

    – Kalle
    Jan 25 at 15:15











  • I exactly followed these steps and it solved the problem.

    – Kalle
    Jan 25 at 15:35











  • Unfortunately, the problem appeared again.

    – Kalle
    Jan 27 at 20:53











  • Seems like I have the same problem. Ctrl-Alt-F1 helps temporarily, as it allows me to log in back. But I'd like a proper fix. Also applications dock (on the left) breaks at the same time. Unfortunately, I haven't noticed which particular update brought this behavior, but it was something from last month. And I have it on two different machines, both ubuntu 18.04.

    – Imaskar says Reinstate Monica
    Jan 31 at 8:43











  • Update the system with sudo apt update && sudo apt upgrade or you can do fresh installation of 18.04.2.

    – d a i s y
    Jan 31 at 9:45

















4


















enter image description here



When I try to lock the screen it just freezes. It is not possible to log on again. It used to work perfectly and suddenly it does not. However, I am not aware of any recent updates or similar.



I would try to reinstall the component that is responsible for locking the screen. Which one would that be?










share|improve this question

























  • @PRATAP yes, but with the same buggy behavior

    – Kalle
    Jan 25 at 15:15











  • I exactly followed these steps and it solved the problem.

    – Kalle
    Jan 25 at 15:35











  • Unfortunately, the problem appeared again.

    – Kalle
    Jan 27 at 20:53











  • Seems like I have the same problem. Ctrl-Alt-F1 helps temporarily, as it allows me to log in back. But I'd like a proper fix. Also applications dock (on the left) breaks at the same time. Unfortunately, I haven't noticed which particular update brought this behavior, but it was something from last month. And I have it on two different machines, both ubuntu 18.04.

    – Imaskar says Reinstate Monica
    Jan 31 at 8:43











  • Update the system with sudo apt update && sudo apt upgrade or you can do fresh installation of 18.04.2.

    – d a i s y
    Jan 31 at 9:45













4













4









4


1






enter image description here



When I try to lock the screen it just freezes. It is not possible to log on again. It used to work perfectly and suddenly it does not. However, I am not aware of any recent updates or similar.



I would try to reinstall the component that is responsible for locking the screen. Which one would that be?










share|improve this question














enter image description here



When I try to lock the screen it just freezes. It is not possible to log on again. It used to work perfectly and suddenly it does not. However, I am not aware of any recent updates or similar.



I would try to reinstall the component that is responsible for locking the screen. Which one would that be?







18.04 lock-screen






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 25 at 14:14









KalleKalle

2434 silver badges15 bronze badges




2434 silver badges15 bronze badges















  • @PRATAP yes, but with the same buggy behavior

    – Kalle
    Jan 25 at 15:15











  • I exactly followed these steps and it solved the problem.

    – Kalle
    Jan 25 at 15:35











  • Unfortunately, the problem appeared again.

    – Kalle
    Jan 27 at 20:53











  • Seems like I have the same problem. Ctrl-Alt-F1 helps temporarily, as it allows me to log in back. But I'd like a proper fix. Also applications dock (on the left) breaks at the same time. Unfortunately, I haven't noticed which particular update brought this behavior, but it was something from last month. And I have it on two different machines, both ubuntu 18.04.

    – Imaskar says Reinstate Monica
    Jan 31 at 8:43











  • Update the system with sudo apt update && sudo apt upgrade or you can do fresh installation of 18.04.2.

    – d a i s y
    Jan 31 at 9:45

















  • @PRATAP yes, but with the same buggy behavior

    – Kalle
    Jan 25 at 15:15











  • I exactly followed these steps and it solved the problem.

    – Kalle
    Jan 25 at 15:35











  • Unfortunately, the problem appeared again.

    – Kalle
    Jan 27 at 20:53











  • Seems like I have the same problem. Ctrl-Alt-F1 helps temporarily, as it allows me to log in back. But I'd like a proper fix. Also applications dock (on the left) breaks at the same time. Unfortunately, I haven't noticed which particular update brought this behavior, but it was something from last month. And I have it on two different machines, both ubuntu 18.04.

    – Imaskar says Reinstate Monica
    Jan 31 at 8:43











  • Update the system with sudo apt update && sudo apt upgrade or you can do fresh installation of 18.04.2.

    – d a i s y
    Jan 31 at 9:45
















@PRATAP yes, but with the same buggy behavior

– Kalle
Jan 25 at 15:15





@PRATAP yes, but with the same buggy behavior

– Kalle
Jan 25 at 15:15













I exactly followed these steps and it solved the problem.

– Kalle
Jan 25 at 15:35





I exactly followed these steps and it solved the problem.

– Kalle
Jan 25 at 15:35













Unfortunately, the problem appeared again.

– Kalle
Jan 27 at 20:53





Unfortunately, the problem appeared again.

– Kalle
Jan 27 at 20:53













Seems like I have the same problem. Ctrl-Alt-F1 helps temporarily, as it allows me to log in back. But I'd like a proper fix. Also applications dock (on the left) breaks at the same time. Unfortunately, I haven't noticed which particular update brought this behavior, but it was something from last month. And I have it on two different machines, both ubuntu 18.04.

– Imaskar says Reinstate Monica
Jan 31 at 8:43





Seems like I have the same problem. Ctrl-Alt-F1 helps temporarily, as it allows me to log in back. But I'd like a proper fix. Also applications dock (on the left) breaks at the same time. Unfortunately, I haven't noticed which particular update brought this behavior, but it was something from last month. And I have it on two different machines, both ubuntu 18.04.

– Imaskar says Reinstate Monica
Jan 31 at 8:43













Update the system with sudo apt update && sudo apt upgrade or you can do fresh installation of 18.04.2.

– d a i s y
Jan 31 at 9:45





Update the system with sudo apt update && sudo apt upgrade or you can do fresh installation of 18.04.2.

– d a i s y
Jan 31 at 9:45










2 Answers
2






active

oldest

votes


















0



















You can track the bug here. Dash to Dock Gnome extension is causing it.



Upgrading packages helped for me.



Also known temporary workarounds:




  1. Ctrl+Alt+F1 after locking to repaint screen.


  2. Win+L twice to hide screen content (the dock will still be visible, though)

  3. after logging back Alt+F2, type r, enter. To reset Gnome and fix broken dock.





share|improve this answer






















  • 2





    It seems more likely to be correct but not a proper answer and seems as comment. Please provide a detail answer with describing which package to upgrade and how to otherwise it will be deleted.

    – d a i s y
    Jan 31 at 9:57











  • The bug was in dash-to-dock. I don't know which package contains it, probably gnome-software. Just update all packages. Deleting the only answer is surely useful thing to do, go on.

    – Imaskar says Reinstate Monica
    Jan 31 at 12:08












  • I realized that the upgrade fixed almost the problem, but if the laptop is docked I still have it.

    – Natim
    Feb 1 at 8:44











  • Trying to upgrade to linux-headers-4.15.0-45-generic

    – Natim
    Feb 1 at 8:45











  • Upgrading kernel won't help. Try installing latest dash to dock or disable it completely. Also note, that ubuntu dock is a derivative of dash to dock, so take a look at it, if it is enabled in your system (it is optional).

    – Imaskar says Reinstate Monica
    Feb 1 at 9:11



















0



















Might be related to this bug:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1656658



I've been getting a lot of screen hangs.



try opening a terminal and enter
$dmesg -w



This will show you the last error...
also consider getting your sys info with
$inxi -Fxz



good luck!






share|improve this answer


























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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0



















    You can track the bug here. Dash to Dock Gnome extension is causing it.



    Upgrading packages helped for me.



    Also known temporary workarounds:




    1. Ctrl+Alt+F1 after locking to repaint screen.


    2. Win+L twice to hide screen content (the dock will still be visible, though)

    3. after logging back Alt+F2, type r, enter. To reset Gnome and fix broken dock.





    share|improve this answer






















    • 2





      It seems more likely to be correct but not a proper answer and seems as comment. Please provide a detail answer with describing which package to upgrade and how to otherwise it will be deleted.

      – d a i s y
      Jan 31 at 9:57











    • The bug was in dash-to-dock. I don't know which package contains it, probably gnome-software. Just update all packages. Deleting the only answer is surely useful thing to do, go on.

      – Imaskar says Reinstate Monica
      Jan 31 at 12:08












    • I realized that the upgrade fixed almost the problem, but if the laptop is docked I still have it.

      – Natim
      Feb 1 at 8:44











    • Trying to upgrade to linux-headers-4.15.0-45-generic

      – Natim
      Feb 1 at 8:45











    • Upgrading kernel won't help. Try installing latest dash to dock or disable it completely. Also note, that ubuntu dock is a derivative of dash to dock, so take a look at it, if it is enabled in your system (it is optional).

      – Imaskar says Reinstate Monica
      Feb 1 at 9:11
















    0



















    You can track the bug here. Dash to Dock Gnome extension is causing it.



    Upgrading packages helped for me.



    Also known temporary workarounds:




    1. Ctrl+Alt+F1 after locking to repaint screen.


    2. Win+L twice to hide screen content (the dock will still be visible, though)

    3. after logging back Alt+F2, type r, enter. To reset Gnome and fix broken dock.





    share|improve this answer






















    • 2





      It seems more likely to be correct but not a proper answer and seems as comment. Please provide a detail answer with describing which package to upgrade and how to otherwise it will be deleted.

      – d a i s y
      Jan 31 at 9:57











    • The bug was in dash-to-dock. I don't know which package contains it, probably gnome-software. Just update all packages. Deleting the only answer is surely useful thing to do, go on.

      – Imaskar says Reinstate Monica
      Jan 31 at 12:08












    • I realized that the upgrade fixed almost the problem, but if the laptop is docked I still have it.

      – Natim
      Feb 1 at 8:44











    • Trying to upgrade to linux-headers-4.15.0-45-generic

      – Natim
      Feb 1 at 8:45











    • Upgrading kernel won't help. Try installing latest dash to dock or disable it completely. Also note, that ubuntu dock is a derivative of dash to dock, so take a look at it, if it is enabled in your system (it is optional).

      – Imaskar says Reinstate Monica
      Feb 1 at 9:11














    0















    0











    0









    You can track the bug here. Dash to Dock Gnome extension is causing it.



    Upgrading packages helped for me.



    Also known temporary workarounds:




    1. Ctrl+Alt+F1 after locking to repaint screen.


    2. Win+L twice to hide screen content (the dock will still be visible, though)

    3. after logging back Alt+F2, type r, enter. To reset Gnome and fix broken dock.





    share|improve this answer
















    You can track the bug here. Dash to Dock Gnome extension is causing it.



    Upgrading packages helped for me.



    Also known temporary workarounds:




    1. Ctrl+Alt+F1 after locking to repaint screen.


    2. Win+L twice to hide screen content (the dock will still be visible, though)

    3. after logging back Alt+F2, type r, enter. To reset Gnome and fix broken dock.






    share|improve this answer















    share|improve this answer




    share|improve this answer








    edited Feb 11 at 18:27









    mature

    3,0905 gold badges14 silver badges42 bronze badges




    3,0905 gold badges14 silver badges42 bronze badges










    answered Jan 31 at 9:38









    Imaskar says Reinstate MonicaImaskar says Reinstate Monica

    1015 bronze badges




    1015 bronze badges










    • 2





      It seems more likely to be correct but not a proper answer and seems as comment. Please provide a detail answer with describing which package to upgrade and how to otherwise it will be deleted.

      – d a i s y
      Jan 31 at 9:57











    • The bug was in dash-to-dock. I don't know which package contains it, probably gnome-software. Just update all packages. Deleting the only answer is surely useful thing to do, go on.

      – Imaskar says Reinstate Monica
      Jan 31 at 12:08












    • I realized that the upgrade fixed almost the problem, but if the laptop is docked I still have it.

      – Natim
      Feb 1 at 8:44











    • Trying to upgrade to linux-headers-4.15.0-45-generic

      – Natim
      Feb 1 at 8:45











    • Upgrading kernel won't help. Try installing latest dash to dock or disable it completely. Also note, that ubuntu dock is a derivative of dash to dock, so take a look at it, if it is enabled in your system (it is optional).

      – Imaskar says Reinstate Monica
      Feb 1 at 9:11













    • 2





      It seems more likely to be correct but not a proper answer and seems as comment. Please provide a detail answer with describing which package to upgrade and how to otherwise it will be deleted.

      – d a i s y
      Jan 31 at 9:57











    • The bug was in dash-to-dock. I don't know which package contains it, probably gnome-software. Just update all packages. Deleting the only answer is surely useful thing to do, go on.

      – Imaskar says Reinstate Monica
      Jan 31 at 12:08












    • I realized that the upgrade fixed almost the problem, but if the laptop is docked I still have it.

      – Natim
      Feb 1 at 8:44











    • Trying to upgrade to linux-headers-4.15.0-45-generic

      – Natim
      Feb 1 at 8:45











    • Upgrading kernel won't help. Try installing latest dash to dock or disable it completely. Also note, that ubuntu dock is a derivative of dash to dock, so take a look at it, if it is enabled in your system (it is optional).

      – Imaskar says Reinstate Monica
      Feb 1 at 9:11








    2




    2





    It seems more likely to be correct but not a proper answer and seems as comment. Please provide a detail answer with describing which package to upgrade and how to otherwise it will be deleted.

    – d a i s y
    Jan 31 at 9:57





    It seems more likely to be correct but not a proper answer and seems as comment. Please provide a detail answer with describing which package to upgrade and how to otherwise it will be deleted.

    – d a i s y
    Jan 31 at 9:57













    The bug was in dash-to-dock. I don't know which package contains it, probably gnome-software. Just update all packages. Deleting the only answer is surely useful thing to do, go on.

    – Imaskar says Reinstate Monica
    Jan 31 at 12:08






    The bug was in dash-to-dock. I don't know which package contains it, probably gnome-software. Just update all packages. Deleting the only answer is surely useful thing to do, go on.

    – Imaskar says Reinstate Monica
    Jan 31 at 12:08














    I realized that the upgrade fixed almost the problem, but if the laptop is docked I still have it.

    – Natim
    Feb 1 at 8:44





    I realized that the upgrade fixed almost the problem, but if the laptop is docked I still have it.

    – Natim
    Feb 1 at 8:44













    Trying to upgrade to linux-headers-4.15.0-45-generic

    – Natim
    Feb 1 at 8:45





    Trying to upgrade to linux-headers-4.15.0-45-generic

    – Natim
    Feb 1 at 8:45













    Upgrading kernel won't help. Try installing latest dash to dock or disable it completely. Also note, that ubuntu dock is a derivative of dash to dock, so take a look at it, if it is enabled in your system (it is optional).

    – Imaskar says Reinstate Monica
    Feb 1 at 9:11






    Upgrading kernel won't help. Try installing latest dash to dock or disable it completely. Also note, that ubuntu dock is a derivative of dash to dock, so take a look at it, if it is enabled in your system (it is optional).

    – Imaskar says Reinstate Monica
    Feb 1 at 9:11














    0



















    Might be related to this bug:
    https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1656658



    I've been getting a lot of screen hangs.



    try opening a terminal and enter
    $dmesg -w



    This will show you the last error...
    also consider getting your sys info with
    $inxi -Fxz



    good luck!






    share|improve this answer





























      0



















      Might be related to this bug:
      https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1656658



      I've been getting a lot of screen hangs.



      try opening a terminal and enter
      $dmesg -w



      This will show you the last error...
      also consider getting your sys info with
      $inxi -Fxz



      good luck!






      share|improve this answer



























        0















        0











        0









        Might be related to this bug:
        https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1656658



        I've been getting a lot of screen hangs.



        try opening a terminal and enter
        $dmesg -w



        This will show you the last error...
        also consider getting your sys info with
        $inxi -Fxz



        good luck!






        share|improve this answer














        Might be related to this bug:
        https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1656658



        I've been getting a lot of screen hangs.



        try opening a terminal and enter
        $dmesg -w



        This will show you the last error...
        also consider getting your sys info with
        $inxi -Fxz



        good luck!







        share|improve this answer













        share|improve this answer




        share|improve this answer










        answered Apr 21 at 7:23









        pleabargainpleabargain

        32 bronze badges




        32 bronze badges































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