I've solved the problem by rollback the composite manger Compiz, to Metacity. Always this error appears (to me, at least), when the system finish to start in GNOME. So, I thought it was a Compiz problem.
I generated a file .desktop in the /etc/xgd/autostart directory, with the instruction: "metacity --replace" And, by the other hand, I deleted the Compiz and Compiz-core packages, with: "sudo apt-get remove compiz" "sudo apt-get remove compiz-core" Also, I change the driver in one machine with the "nouveau" default and delete the nVidia propietary. In another machine, I left the nVidia driver privative. Since then, I haven't got the problem again. So, it works for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1235945 Title: Xorg crashed with SIGABRT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1235945/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs