I updated my system from Ubuntu 16.04 to Ubuntu 18.04 and after updating when I am starting my machine it's asking me for login password and when I am typing the correct password one blank screen appears and it's again asking me for the password and the same thing happening again and again. I saw some answers on the internet for this problem and everyone says to press Ctrl + Alt + F1 on login screen to enter into console and follow some commands as they mentioned but whenever I am pressing Ctrl + Alt + F1 or F2,F3,.....,F9 nothing is happening and I can't see any console and I am still on the login page. Please help me guys to get rid of this problem. I will be very happy if you can help me 🙂
A common reason for login loops...
If you've been starting graphic applications from the terminal using
sudo, that's what probably caused your problem. Always use
- boot to the GRUB menu
- choose Advanced Options
- choose Recovery mode
- choose Root access
at the # prompt, type:
sudo mount -o remount,rw /# remount the disk as rw
cd /home/your_username# change directory
ls -al .*thority*# list some files
You should see something like this...
-rw------- 1 your_username your_username 407910 Nov 2 08:56 .ICEauthority -rw------- 1 your_username your_username 58 Jun 23 2017 .Xauthority
If it DOES NOT show
sudo chmod 600 .*thority*# change file protection
If it DOES SHOW
root root then...
sudo chown your_username:your_username .*thority*# change file ownership
reboot# reboot the computer
Reboot and see if you can log in.