Solve the problem that Ubuntu cannot enter the graphical interface

Solution to the problem that ubuntu cannot enter the graphical interface:

Press ctrl Alt F1 (F2-F6 can be used) on the login interface , and then enter your username and password to log in.

After logging in successfully, sudo -i, then enter the password to obtain root permissions, enter startx in the command line, if you successfully enter the graphical user interface, good luck,

Generally It will not succeed. There will be many lines of error messages. One of them will tell you that there is an error in /home/username/.Xauthority.

To be on the safe side, copy this file somewhere else. To avoid being unable to recover and then perform the deletion operation,

First execute cp /home/username/.Xauthority /home/, and then execute rm /home/username/.Xauthority,

After successful deletion , execute startx again, this time there will be a line prompting If ******,remove /tmp/.X0-lock and start again. Then follow the prompts, we enter rm /tmp/.X0-lock to delete the file.

After completion, we enter sudo service lightdm restart. After the execution is completed, return to the login interface and log in to successfully log in to the graphical user interface.

Recommended tutorial: "linux tutorial"

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