Ubuntu logs me back in immediately after logout

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A few days ago I noticed that when I log out of Ubuntu 16, the screens go black and then I am immediately logged back in again. I do not have autologin enabled.



Observations of other strange behaviour that seemed to start at around the same time:



  • I can no longer access docker with using sudo, although if I run newgrp docker, a new shell starts and I can run docker with sudo. And yes, my user is in the docker group.

  • I sometimes get a "The login keyring did not get unlocked when you logged into your computer" message on login. I'd never seen this message before, and it doesn't always appear, still trying to figure out exactly which conditions trigger it.

This is not a new installation or set up. It's been stable for at least a year. I know that in the last few weeks, there were some updates that got recently applied, and I think all this might have started after the last reboot, but I'm not sure what's causing these problems. Has anyone else noticed this sort of behaviour, or have any debugging suggestions?







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    up vote
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    down vote

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    A few days ago I noticed that when I log out of Ubuntu 16, the screens go black and then I am immediately logged back in again. I do not have autologin enabled.



    Observations of other strange behaviour that seemed to start at around the same time:



    • I can no longer access docker with using sudo, although if I run newgrp docker, a new shell starts and I can run docker with sudo. And yes, my user is in the docker group.

    • I sometimes get a "The login keyring did not get unlocked when you logged into your computer" message on login. I'd never seen this message before, and it doesn't always appear, still trying to figure out exactly which conditions trigger it.

    This is not a new installation or set up. It's been stable for at least a year. I know that in the last few weeks, there were some updates that got recently applied, and I think all this might have started after the last reboot, but I'm not sure what's causing these problems. Has anyone else noticed this sort of behaviour, or have any debugging suggestions?







    share|improve this question























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      A few days ago I noticed that when I log out of Ubuntu 16, the screens go black and then I am immediately logged back in again. I do not have autologin enabled.



      Observations of other strange behaviour that seemed to start at around the same time:



      • I can no longer access docker with using sudo, although if I run newgrp docker, a new shell starts and I can run docker with sudo. And yes, my user is in the docker group.

      • I sometimes get a "The login keyring did not get unlocked when you logged into your computer" message on login. I'd never seen this message before, and it doesn't always appear, still trying to figure out exactly which conditions trigger it.

      This is not a new installation or set up. It's been stable for at least a year. I know that in the last few weeks, there were some updates that got recently applied, and I think all this might have started after the last reboot, but I'm not sure what's causing these problems. Has anyone else noticed this sort of behaviour, or have any debugging suggestions?







      share|improve this question













      A few days ago I noticed that when I log out of Ubuntu 16, the screens go black and then I am immediately logged back in again. I do not have autologin enabled.



      Observations of other strange behaviour that seemed to start at around the same time:



      • I can no longer access docker with using sudo, although if I run newgrp docker, a new shell starts and I can run docker with sudo. And yes, my user is in the docker group.

      • I sometimes get a "The login keyring did not get unlocked when you logged into your computer" message on login. I'd never seen this message before, and it doesn't always appear, still trying to figure out exactly which conditions trigger it.

      This is not a new installation or set up. It's been stable for at least a year. I know that in the last few weeks, there were some updates that got recently applied, and I think all this might have started after the last reboot, but I'm not sure what's causing these problems. Has anyone else noticed this sort of behaviour, or have any debugging suggestions?









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