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I updated my Ubuntu 14.04 but after update it not starting after login and the login screen page will repeat thanks

sajad
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1 Answers1

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This might be related to an ownership or a permission issue: if you have access to TTY using Ctr + alt + F1 (or F2, F3 ... ,F6). Login there: type your login when prompted for it, hit return, you will then be prompted for your password. Type it and hit return. Once you successfully logged in, try the following solutions:

  1. .Xauthority ownership issue

    • Type ls -lah.
    • Look at the line containing .Xauthority.
    • If it owned by root than type: sudo chown YourUsername:YourUsername .Xauthority

  2. . ownership issue

    • Type ls -lahr.
    • Look at the line containing only ..
    • If it owned by root than type: sudo chown YourUsername:YourUsername .

  3. /temp permission issue

    • Type ls -ld /tmp.
    • If the permission do no look like drwxrwxrwt
    • Type sudo chmod a+wt /tmp

  4. Just try deleting .Xauthority (by typing sudo rm .Xauthority)

  5. lightdm is acting up -> complete reinstall

    • Make sure you are connected to internet with DHCP on!
    • Log in in the TTY and type the following commands:
    • sudo apt-get purge lightdm
    • sudo apt-get update
    • sudo apt-get install lightdm
    • dpkg-reconfigure lightdm
    • sudo shutdown -r now #to restart the computer
Prolix
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