1. Try to change the file permissions on the file you are trying to fix.
  2. Use a command line tool to correct the permissions on the file.
  3. Reboot your computer and try again.

Ways to Fix Ubuntu Login Loop Issue

Use Shell

If you are using a Linux distribution that uses GNOME or KDE, you can also use the following command to start Ubuntu in a terminal: sudo ubuntu login

To log in to Ubuntu, type the following commands: sudo apt-get update && sudo apt-get upgrade && sudo apt-get install ubuntu-desktop If you want to exit the command line, you can press Ctrl+Alt+F2 on your keyboard. ..

Check Tmp Folder

chmod 777 /tmp

If you are unable to log in, please check that your username and password are correct. If they are not, please contact your system administrator. In case this fails to work as well, return to the terminal by pressing Ctrl+Alt+F3. If you cannot log in, please check that your username and password are correct and contact your system administrator. ..

Xauthority

sudo chmod 755 /usr/share/Xauthority This will change the permissions of the Xauthority file to 755, which will fix the problem.

To log in to Ubuntu, press Ctrl+Alt+F7 on your keyboard. This will take you back to the usual login screen. Proceed to log in to Ubuntu by pressing the F7 key on your keyboard.

Final Words

If you’re having trouble logging into your Ubuntu system, there are a few things you can do to try and fix the problem. First, make sure that your password is strong and unique. Second, make sure that your user name and password are both typed in correctly. Finally, if you’re still having trouble logging in, try restarting your computer or changing your password. ..