Ubuntu 14.04 Login Loop Issue

Solution 1:

For me, the solution was simply running this command from tty1:

sudo rm .Xauthority

Solution 2:

I know it's been a while, but in case the problem persists, her's what I'd do. This looks a lot like a "user" specific problem, especially after the reinstall.

First of all, try to create a new user (sudo adduser "username") and see if that works. If it does, you have the confirmation that something in your local configuration is wrong.

Try to start with a new, fresh configuration with the following commands (after logging in with your problematic username from a tty)

mkdir ~/cfg-backups
mv ~/.config ~/cfg-backup
mv ~/.dconf ~/cfg-backup

And check if you're back in business. You can than restore any configs from the backups that you should require.

Solution 3:

In my case the following method solved the trouble

First login into tty by pressing CtrlAltF1.

Reinstall Ubuntu Desktop (i.e Unity)

sudo apt-get install --reinstall ubuntu-desktop

Some other tips are available here : ubuntu 14.04 login loop problem