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I am currently using gdm3 destop manager while I login it gets stuck in login loop.

  • I have followed almost all the procedures suggested in this post
  • Permissions of Xauthority and /tmp were fine.
  • Added sudo add-apt-repository ppa:graphics-drivers/ppa and updated after it as well.

But none of them worked.

I created a new user when I try to login through it there is no login loop. I am able to login properly. Why am I not able to use the original user. I'm really not understanding what to do. Can someone please help.

VINTA REETHU
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  • I'm not clear what issue you have? Do you have (1) a login-loop, or do you have (2) a wrong password issue? How did you create a new user, if you are not able to login? – Enterprise Apr 28 '21 at 16:42
  • With gdm3 I'm having login issue. You can get CLI by pressing Ctrl+Alt+F3 when you are in login screen. Now I can access CLI using which I created new user.When I uninstall gdm3 and install lightdm then I'm getting wrong password issue. – VINTA REETHU Apr 28 '21 at 17:12
  • OK. When you CTRL+ALT+F3, then you are able to login with your original user, and this user has admin (sudo) privileges? – Enterprise Apr 28 '21 at 18:00
  • Yes it has admin privileges – VINTA REETHU Apr 28 '21 at 18:30
  • OK. Login loops happen when Gnome Shell crashes just after GDM authenticates you. Usually there is no "wrong password" message, and this is what was confusing me from your original post, but I see you've edited that. The permissions on the user's .Xauthority file are just one cause, but I suspect you've already checked that; just double check by doing ls -l in the user's home directory and make sure nothing is owned by root. – Enterprise Apr 28 '21 at 19:03
  • .Xauthority permisions are with user. I even checked ls -l in the user's home directory and made sure nothing was owned by root. – VINTA REETHU Apr 29 '21 at 03:45
  • OK. Let's check if there are any other files ~not~ owned by you in your home directory. Login using Ctrl+Alt+F3, again, and execute the following find $HOME -not -user $USER -exec ls -lad {} \;. Let me know what you find. – Enterprise Apr 29 '21 at 04:16
  • Sorry for the late reply. I ran the above given command. It said /home/user/.cache/dconf, /home/user/.cache/doc, /home/user/dbus/session-bus/ is owned by root. – VINTA REETHU Apr 30 '21 at 03:48
  • Did you ever get this working? If not, I can suggest on more thing to try. Let me know. – Enterprise May 03 '21 at 19:43

1 Answers1

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Since you are able to login to Gnome Shell using the new user you had created, this implies that the issue is with your existing user, and not a Gnome Shell issue. (Issues with Gnome Shell usually have similar symptoms).

Check if there are any files not owned by you in your home directory.

Login using CtrlAltF3, again, and execute the following:

find $HOME -not -user $USER -exec ls -lad {} \;

Option 1: Fix These File Permissions

  1. For each file or directory NOT owned by you, execute:

    sudo chown -R $USER:$USER <file or directory path>

    Based on your comment above, you can execute the following commands on the parent directories:

    sudo chown -R $USER:$USER ~/.cache
sudo chown -R $USER:$USER ~/dbus

  2. Then, see if you can successfully login to your desktop environment.

Option 2: Remove These Files

I don't think think you should have these files (.cache/dconf, .cache/doc, and dbus) in your home directory at all. I suspect that you ran a graphical program as root. If you have done this, never run any graphical program using sudo. (Insetad, use the admin: parameter; for example nautilus admin:/path/to/directory).

In any case Ubuntu should run fine without the .cache/dconf, .cache/doc, and dbus files or directories.

  1. Try removing these files to a backup location.

    sudo mkdir /home/temp
sudo mv ~/.cache/dconf /home/temp
sudo mv ~/.cache/doc /home/temp
sudo mv ~/dbus /home/temp

  2. Then, see if you can successfully login to your desktop environment.

  3. If everything works, delete the backed up files.

    sudo rm -rf /home/temp
Enterprise
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