I am also having the same problem here, it started to happen a lot after I did regular updates last friday.
I am using nvidia drivers 331.113 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1451613 Title: Unity/compiz crashes when locking screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1451613/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
