I have this same issue. I filed a bug report using ubuntu-bug. See here: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1504816
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1454868 Title: Ubuntu 15.04 Freezes Totally To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1454868/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
