In my case this problem randomly appears on boot before greetings screen and i receive message "The system is running in low-graphics mode"
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/740785 Title: Caught signal 11 (Segmentation fault). Server aborting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/740785/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs