So I have a Debian distro at home (considering getting ubuntu), and I can't login. When I use the correct password is does this thing where it makes it look like it's going to login, and then it redirects to the login screen, but when I use an incorrect password it says "authentication failure". Does anyone know what could be causing this?
Had exactly the issue as described. After switching to a console (
Ctrl+Alt+F6), it appeared that the root folder was completely full (use
df ). A simple
sudo apt-get clean did the trick. After confirmation that the drive has space available, go back to login screen using
I also have this problem from time to time, but the solutions here don't work. I found the following somewhere, but can't find it again, so here it is:
- Switch to a console with
- Log in using the console (you are asked for your username and password right away);
sudo chmod 1777 /tmpand the password for
- Go back with
Ctrl+Alt+F7and proceed normally.
Those are the standard permissions of
/tmp and I have absolutely no clue why they should be wrong at log in. The only pattern I think I found is that I need to have tired to log in with a wrong password before using the correct one stops working.
Alternative cause and solution:
In my case, there was a syntax error in /etc/X11/xorg.conf. Judging by google results, this is a lot more rare than file permission problems. I found this out through attempting
startx from the terminal (Ctrl+Alt+F2), which pointed me to a log file where it noted the syntax error.