Thanks for taking the time to report this bug. Could you please attach the files: /var/log/Xorg.0.log and /etc/X11/xorg.conf
Also, you could open a terminal and run "top" and keep an eye on memory usage, perhaps something is eating up all your memory. As further experimentation, you could try to leave the computer at the log-in screen and see whether it freezes. You could also try by logging in and not opening any program and check whether it freezes. ** Changed in: xorg (Ubuntu) Status: Unconfirmed => Needs Info -- xorg freezes https://launchpad.net/bugs/69526 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs