I think this is the duplicate of the bug https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video- nouveau/+bug/1291574.
With docky I can trigger the bug anytime. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1451379 Title: Docky freezes gnome shell 3 in Ubuntu 15.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/docky/+bug/1451379/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
