My ubuntu has just crashed. Now that I restarted it, it does nothing when I enter my password. The screen just gets refreshed leaving the password space empty again. However, if I try to enter a wrong password, it recognize that it is an invalid password. There is also a weird white box around the user names and password in the ubuntu log in page.
A worth mentioning point is that while I was using Ctrl+Alt+Del to restart the computer the window that asks whether I want to restart or shut down the computer was not able to show the characters, there were blank squares instead of each character.
I have tried to set a new password for my user by logging into recovery shell, but it did not work! I also created a new user but couldn't log in to that neither:(
Any suggestion how I can fix it?
Best Answer
Press Ctrl+Alt+F3 and login into the shell using your username and your password. In this case username will be your username you set when you installed Ubuntu.
Now run
ls -lah
. If in the output the line(and look for the line that ends with .Xauthority)then you need to do
chown username:username .Xauthority
and try logging in.Else, do
ls -ld /tmp
. Check for the first 10 letters in the left: they should read exactly so:drwxrwxrwt
.Else, you need to do
sudo chmod a+wt /tmp
and check again.If not both, I'd recommend you either
Make sure you are connected to internet with DHCP on.
sudo apt-get purge lightdm
sudo apt-get update
sudo apt-get install lightdm
dpkg-reconfigure lightdm
Now type
sudo shutdown -r now
to restart.