Here is the xorg.conf I have made some recent changes also. I've changed by BIOS to intergrated instead of pci/apg video and also disabled enegry saver for the system in Ubuntu.
** Attachment added: "xorg.conf" http://librarian.launchpad.net/4945708/xorg.conf -- xorg freezes https://launchpad.net/bugs/69526 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs