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Scout Fox
Asked: 2012-05-02 03:14:43 +0800 CST

after 12.04 upgrade: can't log in although password is correct

  • 772

I upgraded from 10.10 to 12.04, and now can't log in any more. The password is correct- when I type in a wrong one, I am told it's incorrect, while the correct one is seemingly accepted, but then just takes me back to the login page. I can login as guest, but I can't do anything with the shell as it, too, doesn't accept my password.

password login login-screen installation re-installation

7 Answers

  1. try removing the Xauhority file and reboot.

    for me that was

    rm ~/.Xauthority

    reboot

    • 12

  2. Answer from anonymous user:

    I have exactly the same problem and I fixed it by the following solution (found here):

    • Press CTRL+ALT+F1

    • Log in with you user name and password

    • Run the following command: sudo chown -R $USER:$USER $HOME

    • Press CTRL+ALT+F7

    • Try to log in
    • 7

  3. Check if the user has the same userid (and groupid) as the files in the user's home directory. If the user has id 1000 and the files in the user's home directory have 1001, correct the user in the /etc/passwd file to userid 1001.

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  4. Well, follow the instructions indicated here startx doesn't work

    I can't gurantee though that it will work for you as well.

    That means:

    1. try to get a recovery console by using the shortcut Ctrl-Alt-F1. Check first, whether you got write-rights. If not use the option clear to get them.

    2. Now remove the xAuthority files sudo rm /home/username/.Xauthority*

    3. try to reinstall xorg by using sudo apt-get install --reinstall xorg

    4. now reboot with the command sudo reboot. Everything should work fine.

    I had the same problem after an analysis of the error i get when i tried startx I figured that Xserver is the origin of the problem.

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  5. I just had this problem after I updated. I figured out that it had to do with my gnome-shell I was using. So I did the following:

    $ cd etc/apt/sources.list.d/
$ sudo rm gnome3-team-gnome3-precise.list gnome3-team-gnome3-precise.list.save
$ reboot

    And now I'm able to login!

    • 1

  6. I had the same problem. My understanding of the problem is as follows. It occurs if you encrypt you file system during the upgrade and you change the password.

    Solution. login as guest. go to user account control. change the password of your normal user to the original password. log-off and log on with you normal user. you should be able to log n now as the file are now decrypted.

    At least i worked form me.

    • 0

  7. What worked for me was to install byobu, that was enabled in 10.04 and unnistalled during upgrade, so that broke the graphical login (only errored in console).

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