I can confirm this error in Xubuntu 15.04. The error is in deed fixed by installing updates. However the issue appears again with multiple monitors. If you click anywhere the login window will be displayed. This issue is fixed by inserting
active-monitor=0 on the end of file /etc/lightdm/lightdm-gtk- greeter.conf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1410406 Title: black screen after booting, 100% cpu usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1410406/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
