I'm running Xubuntu 13.10 on a 64bit Machine, with kernel 3.11.0-15-generic.
In the Settings panel > Software and updates, tab
Additional drivers, I switched the default driver to a proprietary driver. After a reboot, huge problem. I type my password and the X server seems to crash. I can't do anything. I'm only able to switch to another TTY. How can I fix this? I should maybe switch back to the former driver, but how?
My /etc/var/Xorg.0.log is here link
Solved. From tty0, I did
sudo aptitude purge fglrx ; sudo dpkg-reconfigure xserver-xorg And everything now works